Tootfinder

Measurement-induced entanglement in noisy 2D random Clifford circuits
Zhi-Yuan Wei, Jon Nelson, Joel Rajakumar, Esther Cruz, Alexey V. Gorshkov, Michael J. Gullans, Daniel Malz
https://arxiv.org/abs/2510.12743

Measurement-induced entanglement in noisy 2D random Clifford circuits
We study measurement-induced entanglement generated by column-by-column sampling of noisy 2D random Clifford circuits of size $N$ and depth $T$. Focusing on the operator entanglement $S_{\rm op}$ of the sampling-induced boundary state, first, we reproduce in the noiseless limit a finite-depth transition from area- to volume-law scaling. With on-site probablistic trace noise at any constant rate $p>0$, the maximal $S_{\rm op}$ attained along the sampling trajectory obeys an area law in the bound…

Area Law for the entanglement entropy of free fermions in nonrandom ergodic field
Leonid Pastur, Mira Shamis
https://arxiv.org/abs/2510.11111 https://arxiv…

Area Law for the entanglement entropy of free fermions in nonrandom ergodic field
The paper deals with the asymptotic behavior of one of the widely used characteristics of correlations in large quantum systems. The correlations are known as quantum entanglement, the characteristic is called the entanglement entropy, and as large systems we consider an ideal gas of spinless lattice fermions. The system is determined by its one-body Hamiltonian. As shown in \cite{EPS}, if the Hamiltonian is an ergodic finite difference operator with exponentially decaying spectral projection, …

A novel quantum memory effect and thermal modulation in graviton-mediated entanglement
Mainak Dutta, Partha Nandi, Bibhas Ranjan Majhi
https://arxiv.org/abs/2510.11075 https://

A novel quantum memory effect and thermal modulation in graviton-mediated entanglement
A central challenge in probing the quantum nature of gravity is to distinguish effects that are genuinely quantum from those that can be explained classically. In this work, we study how quantized gravitational waves interact with thermal quantum systems, modeled as harmonic oscillators. We show that, unlike classical waves, quantized gravitons generate entanglement and leave behind a persistent ``graviton-induced quantum memory'' even after the wave has passed. This effect is further shaped by…

SymTFT Entanglement and Holographic (Non)-Factorization
Ethan Torres, Xingyang Yu
https://arxiv.org/abs/2510.06319 https://arxiv.org/pdf/2510.06319

SymTFT Entanglement and Holographic (Non)-Factorization
Given two otherwise decoupled $D$-dimensional CFTs which possess a common (finite) symmetry subcategory, one can consider entangled boundary states of their $(D+1)$-dimensional SymTFTs. This roughly corresponds to performing a gauging of the tensor product of two CFTs, and we call this phenomena ``SymTFT entanglement" (or ``S-entanglement" for short). In the case when these CFTs have semiclassical holographic duals, the S-entanglement relates the bulk gauge charges between two otherwise disconn…

Experimental verification of multi-copy activation of genuine multipartite entanglement
Robert St\'arek, Tim Gollerthan, Olga Leskovjanov\'a, Michael Meth, Peter Tirler, Nicolai Friis, Martin Ringbauer, Ladislav Mi\v{s}ta Jr
https://arxiv.org/abs/2510.12457

Experimental verification of multi-copy activation of genuine multipartite entanglement
A central concept in quantum information processing is genuine multipartite entanglement (GME), a type of correlation beyond biseparability, that is, correlations that cannot be explained by statistical mixtures of partially separable states. GME is relevant for characterizing and benchmarking complex quantum systems, and it is an important resource for applications such as quantum communication. Remarkably, it has been found that GME can be activated from multiple copies of biseparable quantum…

Quantum Entanglement without Spin-Analyzing Power Dependence at the Colliders
Junle Pei, Tianjun Li, Lina Wu, Xiqing Hao, Xiaochuan Wang
https://arxiv.org/abs/2510.08031 https:/…

Quantum Entanglement without Spin-Analyzing Power Dependence at the Colliders
We study the quantum entanglement at the colliders which is independent of the spin-analyzing powers. Taking $Λ(\to pπ^-)\barΛ(\to \bar{p}π^+)$ as an example, we investigate whether quantum entanglement in fermion pairs produced at colliders can be certified by using only angular information from final-state decays, while remaining independent of the parity-violating decay parameters $α_Λ$ and $α_{\barΛ}$. Building on a general decomposition of any angular observable in terms of Wigner …

Higher-form entanglement asymmetry and topological order
Amanda Gatto Lamas, Jacopo Gliozzi, Taylor L. Hughes
https://arxiv.org/abs/2510.03967 https://arxi…

Higher-form entanglement asymmetry and topological order
We extend a recently defined measure of symmetry breaking, the entanglement asymmetry, to higher-form symmetries. In particular, we focus on Abelian topological order in two dimensions, which spontaneously breaks a 1-form symmetry. Using the toric code as a primary example, we compute the entanglement asymmetry and compare it to the topological entanglement entropy. We find that while the two quantities are not strictly equivalent, both are sub-leading corrections to the area law and can serve …

Entanglement and accidental symmetries in the nucleon-nucleon system
Alma L. Cavallin, Oliver Thim, Christian Forss\'en
https://arxiv.org/abs/2510.09466 https://

Entanglement and accidental symmetries in the nucleon-nucleon system
We study the connection between accidental symmetries in the nuclear interaction and spin entanglement in two-nucleon scattering. Specifically, we incorporate different levels of Wigner $SU(4)$ and Serber symmetries into leading-order potentials derived from chiral effective field theory. We conduct a quantitative analysis by computing the full $S$ matrix, demonstrating that the neutron-proton spin entanglement can be related to the symmetry properties of the interaction and the presence of cer…

Combined effects of particle geometry and applied vibrations on the mechanics and strength of entangled materials
Saeed Pezeshki, Francois Barthelat
https://arxiv.org/abs/2510.09933

Combined effects of particle geometry and applied vibrations on the mechanics and strength of entangled materials
Entangled materials offer attractive structural features including tensile strength and large deformations, combined with infinite assembly and disassembly capabilities. How the geometry of individual particles governs entanglement, and in turn translates into macroscopic structural properties, provides a rich landscape in terms of mechanics and offers intriguing possibilities in terms of structural design. Despite this potential, there are major knowledge gaps on the entanglement mechanisms an…

Computing moment polytopes - with a focus on tensors, entanglement and matrix multiplication
Maxim van den Berg, Matthias Christandl, Vladimir Lysikov, Harold Nieuwboer, Michael Walter, Jeroen Zuiddam
https://arxiv.org/abs/2510.08336

Computing moment polytopes - with a focus on tensors, entanglement and matrix multiplication
Tensors are fundamental in mathematics, computer science, and physics. Their study through algebraic geometry and representation theory has proved very fruitful in the context of algebraic complexity theory and quantum information. In particular, moment polytopes have been understood to play a key role. In quantum information, moment polytopes (also known as entanglement polytopes) provide a framework for the single-particle quantum marginal problem and offer a geometric characterization of ent…

DH-EAC: Design of a Dynamic, Hierarchical Entanglement Access Control Protocol
Akihisa Takahashi, Yoshito Tobe
https://arxiv.org/abs/2510.02895 https://arx…

DH-EAC: Design of a Dynamic, Hierarchical Entanglement Access Control Protocol
We propose Dynamic, Hierarchical Entanglement Access Control (DH-EAC), a pure-quantum protocol for fair and anonymous allocation of scarce entanglement across wide-area quantum networks composed of many quantum LANs (QLANs). Prior Dicke-state-based pure-quantum MACs resolve contention by local measurements without classical signaling, but they mainly target a single QLAN under static conditions; extending them to wide-area, dynamic settings while avoiding post-selection reconciliation remains o…

Beyond 'Templates': Category-Agnostic Object Pose, Size, and Shape Estimation from a Single View
Jinyu Zhang, Haitao Lin, Jiashu Hou, Xiangyang Xue, Yanwei Fu
https://arxiv.org/abs/2510.11687

Beyond 'Templates': Category-Agnostic Object Pose, Size, and Shape Estimation from a Single View
Estimating an object's 6D pose, size, and shape from visual input is a fundamental problem in computer vision, with critical applications in robotic grasping and manipulation. Existing methods either rely on object-specific priors such as CAD models or templates, or suffer from limited generalization across categories due to pose-shape entanglement and multi-stage pipelines. In this work, we propose a unified, category-agnostic framework that simultaneously predicts 6D pose, size, and dense sha…

Generalized Entanglement of Purification Criteria for 2-Producible States in Multipartite Systems
Tian-Ren Jin, Yu-Ran Zhang, Heng Fan
https://arxiv.org/abs/2510.04596 https://

Generalized Entanglement of Purification Criteria for 2-Producible States in Multipartite Systems
Multipartite entanglement has much more complex structures than bipartite entanglement, such as the semiseparable state. The multipartite state absent of multipartite entanglement is called a 2-producible state, which is a tensor product of at most 2-partite states. Recently, it is proved that a tripartite pure state is 2-producible if and only if the gap between entanglement of purification and its lower bound vanishes. Here, we show that the entanglement of purification gap is not sufficient …

Lectures on entanglement, von Neumann algebras, and emergence of spacetime
Hong Liu
https://arxiv.org/abs/2510.07017 https://arxiv.org/pdf/2510.07017

Lectures on entanglement, von Neumann algebras, and emergence of spacetime
We review recent developments in the use of von Neumann algebras to analyze the entanglement structure of quantum gravity and the emergence of spacetime in the semi-classical limit. Von Neumann algebras provide a natural framework for describing quantum subsystems when standard tensor factorizations are unavailable, capturing both kinematic and dynamical aspects of entanglement. The first part of the review introduces the fundamentals of von Neumann algebras, including their classification, a…

A Quantum Generative Framework for Modeling Single-Cell Transcriptomes with Gene-Gene and Cell-Cell Interactions
Selim Romero, Vignesh Kumar, Robert S. Chapkin, James J. Cai
https://arxiv.org/abs/2510.12776

A Quantum Generative Framework for Modeling Single-Cell Transcriptomes with Gene-Gene and Cell-Cell Interactions
Single-cell RNA sequencing (scRNA-seq) data simulation is limited by classical methods that rely on linear correlations, failing to capture the intrinsic, nonlinear dependencies and the simultaneous gene-gene and cell-cell interactions. We introduce qSimCells, a novel hybrid quantum-classical simulator that leverages quantum entanglement to model single-cell transcriptomes. The core innovation is a quantum kernel that uses a parameterized quantum circuit with CNOT gates to encode complex, nonli…

Visualising Quantum Entanglement Using Interactive Electronic Quantum Dice
B. Folkers, A. van Rossum, A. Brinkman, H. K. E. Stadermann
https://arxiv.org/abs/2510.04931 https://

Visualising Quantum Entanglement Using Interactive Electronic Quantum Dice
Quantum entanglement is difficult to teach because it is microscopic and non classical. We present interactive electronic dice that simulate core quantum ideas through haptic interaction and visual feedback. Each die represents a six state system with a superposition display and basis dependent measurement. A pair of dice can be prepared in an entangled mode that yields anti correlated outcomes which sum to seven when measured in the same colour basis while remaining uncorrelated across differe…

Bound on entanglement in neural quantum states
Nisarga Paul
https://arxiv.org/abs/2510.11797 https://arxiv.org/pdf/2510.11797

Bound on entanglement in neural quantum states
Variational wavefunctions offer a practical route around the exponential complexity of many-body Hilbert spaces, but their expressive power is often sharply constrained. Matrix product states, for instance, are efficient but limited to area law entangled states. Neural quantum states (NQS) are widely believed to overcome such limitations, yet little is known about their fundamental constraints. Here we prove that feed-forward neural quantum states acting on $n$ spins with $k$ scalar nonlinearit…

The Fire We Share
Chen Wang, Mengtan Lin
https://arxiv.org/abs/2510.10841 https://arxiv.org/pdf/2510.10841

The Fire We Share
The Fire We Share proposes a care-centered, consequence-aware visualization framework for engaging with wildfire data not as static metrics, but as living archives of ecological and social entanglement. By combining plants-inspired data forms, event-based mapping, and narrative layering, the project foregrounds fire as a shared temporal condition-one that cuts across natural cycles and human systems. Rather than simplifying wildfire data into digestible visuals, The Fire We Share reimagines it …

Localizing entanglement in high-dimensional states
Christopher Vairogs, Akanksha Chablani, Leo Lee, Hanyang Sha, Abigail Vaughan-Lee, Jacob L. Beckey
https://arxiv.org/abs/2510.08501

Localizing entanglement in high-dimensional states
In this work, we study the asymptotic behavior of protocols that localize entanglement in large multi-qubit states onto a subset of qubits by measuring the remaining qubits. We use the maximal average n-tangle that can be generated on a fixed subsystem by measuring its complement -- either with local or global measurements -- as our key figure of merit. These quantities are known respectively as the localizable entanglement (LE) and the entanglement of assistance (EA). We build upon the work of…

Investigation of entanglement in pure final polarization states from neutron-deuteron elastic ccattering and exclusive deuteron break
Henryk Wita{\l}a
https://arxiv.org/abs/2510.10664

Investigation of entanglement in pure final polarization states from neutron-deuteron elastic ccattering and exclusive deuteron break
We investigate the pure polarization states of the outgoing neutron deuteron pair in elastic polarized neutron polarized deuteron scattering, as well as the pure polarization states of the three free nucleons produced in the corresponding deuteron breakup reaction. Our aim is to provide clear evidence of entanglement in their spin degrees of freedom. These final states can be generated from pure spin states of the incoming nd system, where both the neutron and the deuteron are strongly polarize…

Entanglement Entropy and Complexity in Dyonic Quantum Black Holes
Sanhita Parihar, Gurmeet Singh Punia
https://arxiv.org/abs/2510.05264 https://arxiv.org/p…

Entanglement Entropy and Complexity in Dyonic Quantum Black Holes
In this work, we study the holographic entanglement entropy (HEE) and holographic complexity (HC) for three-dimensional dyonic quantum black holes, incorporating corrections arising from bulk quantum fields in the setup of double holography. We investigate the holographic entanglement entropy through the holographic Ryu-Takayanagi (RT) prescription and the island prescription. Using RT extremization, we evaluate HEE for connected and disconnected (island) surfaces and show islands emerge when R…

The exact relation between the entanglement entropies of the $XY$ and quantum Ising chains with free and fixed boundary conditions
Tianhao He, Xintian Wu
https://arxiv.org/abs/2509.16880

The exact relation between the entanglement entropies of the $XY$ and quantum Ising chains with free and fixed boundary conditions
The entanglement entropies of $XY$ chains and quantum Ising chains (QICs) with fixed boundary conditions are studied here. Three kinds of boundary conditions (BCs) are considered: fixed up--up or down--down (the spins at both ends are aligned in the same direction), fixed up--down or down--up (the spins at the two ends are aligned in opposite directions), and fixed--free (the spin at one end is aligned, and the other end is free). It is shown that i) the entanglement entropy of an $XY$ chain wi…

Qubit entanglement from forward scattering
Kamila Kowalska, Enrico Maria Sessolo
https://arxiv.org/abs/2510.04200 https://arxiv.org/pdf/2510.04200

Qubit entanglement from forward scattering
In the context of entanglement in relativistic $2\to 2$ scattering described by a perturbative $S$-matrix, we derive analytically the concurrence for a mixed final state of two qubits corresponding to a discrete quantum number of the scattered particles. Given an initial product state, the derived concurrence depends at the leading order on the real part of the inelastic forward amplitude and the initial state only. We also point out that the real part of the forward amplitude provides a sublea…

Magnetic Materials for Quantum Magnonics
Rostyslav O. Serha, Carsten Dubs, Andrii V. Chumak
https://arxiv.org/abs/2510.09331 https://arxiv.org/pdf/2510.093…

Magnetic Materials for Quantum Magnonics
Quantum magnonics studies the quantum properties of magnons, the quanta of spin waves, and their application in quantum information processing. Progress in this field depends on identifying magnetic materials with characteristics tailored to the diverse requirements of magnonics and quantum magnonics. For single-magnon excitation, its control, hybrid coupling, and entanglement, the most critical property is the ability to support long magnon lifetimes. This perspective reviews established and e…

Crosslisted article(s) found for cond-mat.dis-nn. https://arxiv.org/list/cond-mat.dis-nn/new
[1/1]:
- Fractal structure of multipartite entanglement in monitored quantum circuits
Vaibhav Sharma, Erich J Mueller

attrs will have a way to introspect the EFFECTIVE class build parameters in the next version. I swear to Cthulhu I thought this PR is gonna kill me (there's been A LOT more private hence and forth in the background), but I'm happy how it turned out: https://github.com/python-attrs/attrs/pu…

Expose effective class construction properties by hynek · Pull Request #1454 · python-attrs/attrs
ref #602 This is for now just private and the impact zone is limited. But I'm confident it can help us to simplify a bunch of code. I'm especially rather unhappy with the weird entanglement...

Seventeen years after the Large Hadron Collider switched on,
particle physicists are realizing that they can use the collider to explore how information flows through quantum systems
— a question at the foundations of quantum computing.
The two possible spins of the quarks correspond to the 0 and 1 states of a qubit,
a unit of quantum information.
“It is treating the process of colliding things together and forming new particles as a quantum processor,”
s…

Particle Physicists Detect ‘Magic’ at the Large Hadron Collider | Quanta Magazine
The supercollider is now being used to explore quantum phenomena, including a “magic” form of quantum entanglement.

Entanglement signatures of gapless topological phases in a $p$-wave superconductor
S. Srinidhi, Shashi C. L. Srivastava, Jayendra N. Bandyopadhyay
https://arxiv.org/abs/2509.23300

Entanglement signatures of gapless topological phases in a $p$-wave superconductor
We explore the gapless topological phases of a $p$-wave superconductor, probing its rich topologically ordered phases and underlying quantum phenomena. The topological order of the system is characterized by studying its entanglement properties. This study confirms the bulk-boundary correspondence in the entanglement spectrum, even without a full bulk gap. For contractible bipartitions, the entanglement entropy varies non-monotonically with the chemical potential, displaying pronounced peaks at…

Probing phase transitions in non-Hermitian systems with quantum entanglement
Ling-Feng Zhang, Wing Chi Yu
https://arxiv.org/abs/2509.25703 https://arxiv.or…

Probing phase transitions in non-Hermitian systems with quantum entanglement
We study the quantum entanglement and quantum phase transition of the non-Hermitian anisotropic spin-1/2 XY model and XXZ model with the staggered imaginary field by analytical methods and numerical exact diagonalization, respectively. Various entanglement measures, including concurrence, negativity, mutual information, and quantum coherence, and both biorthogonal and self-normal quantities are investigated. Both the biorthogonal and self-normal entanglement quantities, except the biorthogonal …

Tripartite entanglement in the HaPPY code is not holographic
Sriram Akella
https://arxiv.org/abs/2510.08520 https://arxiv.org/pdf/2510.08520

Tripartite entanglement in the HaPPY code is not holographic
Holographic states satisfy several entropic inequalities owing to the Ryu-Takayangi formula. A drawback of these inequalities is that they only use bipartite entanglement in their formulation. We investigate a recently proposed "GHZ-forbidding" inequality, built out of the reflected entropy and the tripartite multi-entropy, that holds for holographic states. We show that the inequality is either violated or saturated, but never strictly satisfied, by stabilizer states, thereby showing that stab…

Crosslisted article(s) found for math.OA. https://arxiv.org/list/math.OA/new
[1/1]:
- Entanglement in von Neumann Algebraic Quantum Information Theory
Lauritz van Luijk

Crosslisted article(s) found for cs.SC. https://arxiv.org/list/cs.SC/new
[1/1]:
- Computing moment polytopes - with a focus on tensors, entanglement and matrix multiplication
van den Berg, Christandl, Lysikov, Nieuwboer, Walter, Zuiddam

Crosslisted article(s) found for cs.LG. https://arxiv.org/list/cs.LG/new
[2/7]:
- Aspects of holographic entanglement using physics-informed-neural-networks
Anirudh Deb, Yaman Sanghavi

Advanced mirror shapes for mode enhancement in plano-concave cavities
William James Hughes, Peter Horak
https://arxiv.org/abs/2510.07251 https://arxiv.org/…

Advanced mirror shapes for mode enhancement in plano-concave cavities
Optical cavities are frequently used in quantum technologies to enhance light matter interactions, with applications including single photon generation and entanglement of distant emitters. The Fabry-Pérot resonator is a popular choice for its high optical access and large emitter-mirror separation. A typical configuration, particularly for emitters that should not be placed close to the mirror surface like trapped ions and Rydberg atoms, features two spherical mirrors placed around a central …

Wormhole-Induced correlation: A Link Between Two Universes
Zhilong Liu, Wentao Liu, Xiaofang Liu, Jieci Wang
https://arxiv.org/abs/2510.04005 https://arxiv…

Wormhole-Induced correlation: A Link Between Two Universes
Motivated by the profound connection between quantum mechanics and spacetime geometry, particularly the conjectured correspondence between wormholes and quantum entanglement as proposed in the ER=EPR framework, this study aims to investigate the influence of wormhole geometries on quantum information extraction. We examine the correlation-specifically mutual information (MI) and entanglement-extracted by two Unruh-DeWitt (UDW) detectors from the quantum vacuum field in the presence of a BTZ wor…

Enhancing Optomechanical Entanglement and Mechanical Squeezing by the Synergistic Effect of Quadratic Optomechanical Coupling and Coherent Feedback
Ya-Feng Jiao, Ruo-Chen Wang, Jing-Xue Liu, Hui-Lai Zhang, Ya-Chuan Liang, Yan Wang, Le-Man Kuang, Hui Jing
https://arxiv.org/abs/2510.04732

Enhancing Optomechanical Entanglement and Mechanical Squeezing by the Synergistic Effect of Quadratic Optomechanical Coupling and Coherent Feedback
Quantum entanglement and squeezing associated with the motions of massive mechanical oscillators play an essential role in both fundamental science and emerging quantum technologies, yet realizing such macroscopic nonclassical states remains a formidable challenge. In this paper, we investigate how to achieve strong optomechanical entanglement and mechanical squeezing in a membrane-embedded cavity optomechanical system incorporating a coherent feedback loop, where the membrane interacts with th…

Quantum-like representation of neuronal networks' activity: modeling "mental entanglement"
Andrei Khrennikov, Makiko Yamada
https://arxiv.org/abs/2509.16253 https:…

Quantum-like representation of neuronal networks' activity: modeling "mental entanglement"
Quantum-like modeling (QLM) - quantum theory applications outside of physics - are intensively developed with applications in biology, cognition, psychology, and decision-making. For cognition, QLM should be distinguished from quantum reductionist models in the spirit of Hameroff and Penrose and well as Umezawa and Vitiello. QLM is not concerned with just quantum physical processes in the brain but also QL information processing by macroscopic neuronal structures. Although QLM of cognition and …

Entanglement entropy between tangent balls in CFT$_D$
Jiankun Li, Li Song
https://arxiv.org/abs/2510.01655 https://arxiv.org/pdf/2510.01655

Entanglement entropy between tangent balls in CFT$_D$
We apply the universal method developed in \cite{Jiang:2025jnk} to compute the entanglement entropy between two tangent balls in CFT$_D$. When taking the radius of one ball to infinity, it gives the entanglement entropy between a ball and its tangent half plane. In two-dimensional case, this configuration is equivalent to the entanglement in boundary conformal field theory (BCFT) between the negative half-axis and an interval ending on the boundary.

Replaced article(s) found for cond-mat.supr-con. https://arxiv.org/list/cond-mat.supr-con/new
[1/1]:
- Entanglement and confinement: A new pairing mechanism in high-T_{C} cuprates
Felix A. Buot, Roland E. S. Otadoy, Unofre Pili

Replaced article(s) found for cond-mat.str-el. https://arxiv.org/list/cond-mat.str-el/new
[1/1]:
- Entanglement detection in quantum materials with competing orders
Giacomo Mazza, Costantino Budroni

Dynamics of Quantum Entanglement Between Photon and Phonon Modes in a Coulomb-coupled Optomechanical Cavity Magnonic Systems
Muhib Ullah, Muhammad Idrees, Said Mikki
https://arxiv.org/abs/2510.02767

Dynamics of Quantum Entanglement Between Photon and Phonon Modes in a Coulomb-coupled Optomechanical Cavity Magnonic Systems
Quantum entanglement is a fundamental phenomenon in quantum information science and a crucial resource for quantum technologies such as precision sensing, secure communication, and computation. In hybrid cavity magno-optomechanical systems, entanglement among cavity photons, magnons, and phonons enables manipulation of quantum states across different modes via radiation pressure-based light-matter interaction. We propose a hybrid optomechanical cavity-magnonic setup with Yttrium iron garnet (YI…

Black Hole Entropy from String Entanglement
Soichiro Mori, Tadakatsu Sakai, Masaki Shigemori
https://arxiv.org/abs/2509.21796 https://arxiv.org/pdf/2509.21…

Black Hole Entropy from String Entanglement
We discuss the notion of string entanglement in string theory, which aims to study entanglement between worldsheet Hilbert spaces rather than entanglement between spacetime Hilbert spaces defined on a time slice in spacetime. Applying this framework to the FZZ duality and its extension to a three-dimensional black hole, we argue that the thermal entropy of 2d and 3d black holes is accounted for by the string entanglement entropy between folded strings arising in the dual sine-Liouville CFT. We …

Complementarity Reveals Entanglement Sharing in Sequential Quantum Measurements
Zinuo Cai, Changliang Ren
https://arxiv.org/abs/2510.02710 https://arxiv.or…

Complementarity Reveals Entanglement Sharing in Sequential Quantum Measurements
We investigate entanglement sharing in a two-qubit sequential measurement scenario using three complementary classical correlation metrics: mutual information (I), sum of conditional probabilities (S), and the Pearson correlation coefficient (C). By investigating both weak measurement and probabilistic projective measurement (PPM) strategies in unilateral and bilateral scenarios, the phenomenon of entanglement sharing is conclusively certified when multiple pairs of classical correlation metric…

HAVIR: HierArchical Vision to Image Reconstruction using CLIP-Guided Versatile Diffusion
Shiyi Zhang, Dong Liang, Hairong Zheng, Yihang Zhou
https://arxiv.org/abs/2510.03122 htt…

HAVIR: HierArchical Vision to Image Reconstruction using CLIP-Guided Versatile Diffusion
The reconstruction of visual information from brain activity fosters interdisciplinary integration between neuroscience and computer vision. However, existing methods still face challenges in accurately recovering highly complex visual stimuli. This difficulty stems from the characteristics of natural scenes: low-level features exhibit heterogeneity, while high-level features show semantic entanglement due to contextual overlaps. Inspired by the hierarchical representation theory of the visual …

LIV-Decoherence on Gravitational Cat States
Iarley P. Lobo, Kelvin Sampaio, Gislaine Var\~ao, Moises Rojas, Valdir B. Bezerra
https://arxiv.org/abs/2510.08828 https://

LIV-Decoherence on Gravitational Cat States
Inspired by approaches based on the stochastic generalized uncertainty principle, we propose a Lindblad equation derived from the quantization of a stochastic modified dispersion relation in a Lorentz Invariance Violation (LIV) scenario. This framework enables us to investigate decoherence effects in a system of particles exhibiting gravitationally induced entanglement. We analyze the impact of LIV on entanglement (quantified by concurrence) considering systematic and stochastic effects.

Symmetry restoration in a fast scrambling system
Sizheng Cao, Xian-Hui Ge
https://arxiv.org/abs/2509.26176 https://arxiv.org/pdf/2509.26176

Symmetry restoration in a fast scrambling system
Entanglement asymmetry -- used here as a direct probe of symmetry restoration -- provides a sharp diagnostic of post-quench dynamics. We test this idea in the complex Sachdev--Ye--Kitaev (cSYK) model with a conserved U(1) charge. Using exact diagonalization, we track the joint evolution of entanglement entropy and entanglement asymmetry after quenches from charge-asymmetric product states. We find rapid volume-law entanglement growth consistent with the subsystem eigenstate thermalization hypot…

Aspects of holographic entanglement using physics-informed-neural-networks
Anirudh Deb, Yaman Sanghavi
https://arxiv.org/abs/2509.25311 https://arxiv.org/p…

Aspects of holographic entanglement using physics-informed-neural-networks
We implement physics-informed-neural-networks (PINNs) to compute holographic entanglement entropy and entanglement wedge cross section. This technique allows us to compute these quantities for arbitrary shapes of the subregions in any asymptotically AdS metric. We test our computations against some known results and further demonstrate the utility of PINNs in examples, where it is not straightforward to perform such computations.

From Quantum Circuits with Ultraslow Dynamics to Classical Plaquette Models
Vikram Ravindranath, Hanchen Liu, Xiao Chen
https://arxiv.org/abs/2510.07247 https://

From Quantum Circuits with Ultraslow Dynamics to Classical Plaquette Models
We introduce a family of hybrid quantum circuits involving unitary gates and projective measurements that display a measurement-induced phase transition. Remarkably, the volume-law phase featuring logarithmic entanglement growth for certain initial states. We attribute this slow entanglement growth to the similarly slow growth of the participation entropy, which bounds the entanglement. Furthermore, the quantum circuit can be mapped to a classical spin model with real positive Boltzmann weights…

An analytic approach for holographic entanglement entropy at (quantum) criticality
Parul Jain, Matti J\"arvinen
https://arxiv.org/abs/2509.25360 https://

An analytic approach for holographic entanglement entropy at (quantum) criticality
We consider holographic entanglement entropy in AdS black hole backgrounds by using the limit of large number of dimensions. By dividing the geometry to two patches (with one patch covering the vicinity of the black hole horizon and another covering the other regions), we are able to obtain fully analytic expressions for the entropy when the entanglement region is a strip. We argue that apart from conformal field theories at finite temperature in high number of dimensions, our method works for …

Fate of entanglement in open quantum spin liquid: Time evolution of its genuine multipartite negativity upon sudden coupling to a dissipative bosonic environment
Federico Garcia-Gaitan, Branislav K. Nikolic
https://arxiv.org/abs/2510.02256

Fate of entanglement in open quantum spin liquid: Time evolution of its genuine multipartite negativity upon sudden coupling to a dissipative bosonic environment
Topological properties of many-body entanglement in quantum spin liquids (QSLs), persisting at arbitrarily long distances, have been intensely explored over the past two decades, but mostly for QSLs viewed as {\em closed} quantum systems. However, in experiments and potential quantum computing applications, candidate materials for this exotic phase of quantum matter will always interact with a dissipative environment, such as the one generated by bosonic quasiparticles in solids at finite tempe…

Optimal Control Meets Flow Matching: A Principled Route to Multi-Subject Fidelity
Eric Tillmann Bill, Enis Simsar, Thomas Hofmann
https://arxiv.org/abs/2510.02315 https://

Optimal Control Meets Flow Matching: A Principled Route to Multi-Subject Fidelity
Text-to-image (T2I) models excel on single-entity prompts but struggle with multi-subject descriptions, often showing attribute leakage, identity entanglement, and subject omissions. We introduce the first theoretical framework with a principled, optimizable objective for steering sampling dynamics toward multi-subject fidelity. Viewing flow matching (FM) through stochastic optimal control (SOC), we formulate subject disentanglement as control over a trained FM sampler. This yields two architec…

Detection of quantum information masking via machine learning
Sheng-Ao Mao, Lin Zhang, Bo Li
https://arxiv.org/abs/2510.12507 https://arxiv.org/pdf/2510.12…

Detection of quantum information masking via machine learning
Recently, machine learning has been widely applied in the field of quantum information, notably in tasks such as entanglement detection, steering characterization, and nonlocality verification. However, few studies have focused on utilizing machine learning to detect quantum information masking. In this work, we investigate supervised machine learning for detecting quantum information masking in both pure and mixed qubit states. For pure qubit states, we randomly generate the corresponding dens…

Entanglement Hamiltonian for the massless Dirac field on a segment with an inhomogeneous background
Erik Tonni, Stefano Trezzi
https://arxiv.org/abs/2509.22182 https://

Entanglement Hamiltonian for the massless Dirac field on a segment with an inhomogeneous background
We study the entanglement Hamiltonian of an interval for the massless Dirac field in an inhomogeneous background on a segment where the same boundary condition at both its endpoints is imposed, and in its ground state. We focus on a class of metrics that are Weyl equivalent to the flat metric through a Weyl factor that depends only on the spatial coordinate. The explicit form of the entanglement Hamiltonian is written as the sum of a local and a bilocal term. The weight function of the local te…

Characterizing and Harnessing Correlations Featuring Independent Qubit Devices
Liang-Liang Sun, Xiang Zhou, Chengjie Zhang, Zizhu Wang, Yong-Shun Song, Sixia Yu
https://arxiv.org/abs/2510.12022

Characterizing and Harnessing Correlations Featuring Independent Qubit Devices
We propose a framework to characterize the correlations in qubit systems for Bell and prepare-and-measure scenarios with independent devices -- a typically non-convex problem. Based on this result, we introduce protocols for referring devices and detecting entanglement with correlation that are not necessarily extreme or nonlocal, as required by common linear approach. } Specifically, our correlation criterion, derived from uncertainty relation specific to qubit systems, can capture the non-con…

Basis-independent coherence and its distribution in de Sitter spacetime
Samira Elghaayda, Atta ur Rahman, Mostafa Mansour
https://arxiv.org/abs/2510.02581 https://

Basis-independent coherence and its distribution in de Sitter spacetime
Quantum coherence in curved spacetime offers a fresh window into the interplay between gravity, thermality, and quantum resources. While previous work has shown that Markovian evolution can generate entanglement and other nonclassical correlations in de Sitter backgrounds, the basis-dependent nature of coherence has so far limited its unambiguous interpretation. Here, we introduce a basis-independent framework to quantify not only the total coherence of two comoving detectors, but also its coll…

High-efficiency and long-distance quantum memory-assisted device-independent quantum secret sharing with single photon sources
Qi Zhang, Jia-Wei Ying, Shi-Pu Gu, Xing-Fu Wang, Lan Zhou, Yu-Bo Sheng
https://arxiv.org/abs/2510.12288

High-efficiency and long-distance quantum memory-assisted device-independent quantum secret sharing with single photon sources
Quantum secret sharing (QSS) plays a critical role in building the distributed quantum networks. Device-independent (DI) QSS provides the highest security level for QSS. However, the photon transmission loss and extremely low multipartite entanglement generation rate largely limit DI QSS's secure photon transmission distance and practical key generation efficiency. To address the above drawbacks, we propose the quantum memory-assisted (QMA) DI QSS protocol based on single photon sources (SPSs).…

Hybrid Vision Transformer and Quantum Convolutional Neural Network for Image Classification
Mingzhu Wang, Yun Shang
https://arxiv.org/abs/2510.12291 https://

Hybrid Vision Transformer and Quantum Convolutional Neural Network for Image Classification
Quantum machine learning (QML) holds promise for computational advantage, yet progress on real-world tasks is hindered by classical preprocessing and noisy devices. We introduce ViT-QCNN-FT, a hybrid framework that integrates a fine-tuned Vision Transformer with a quantum convolutional neural network (QCNN) to compress high-dimensional images into features suited for noisy intermediate-scale quantum (NISQ) devices. By systematically probing entanglement, we show that ansatzes with uniformly dis…

Room-temperature quantum entanglement in a van der Waals material
Xingyu Gao, Zhun Ge, Saakshi Dikshit, Sumukh Vaidya, Peng Ju, Tongcang Li
https://arxiv.org/abs/2509.23170 http…

Room-temperature quantum entanglement in a van der Waals material
Entanglement is central to quantum science and technology. Atomic defects in two-dimensional (2D) van der Waals (vdW) materials offer exciting prospects for quantum sensing, with spatial resolution reaching 1 nm demonstrated using scanning probe techniques. However, entangling qubits in vdW materials remains elusive. Here we report room-temperature quantum entanglement between an optically addressable electron spin and a strongly coupled $^{13}$C nuclear spin in hexagonal boron nitride (hBN). W…

Entanglement dynamics and performance of two-qubit gates for superconducting qubits under non-Markovian effects
Kiyoto Nakamura, Joachim Ankerhold
https://arxiv.org/abs/2510.05872

Entanglement dynamics and performance of two-qubit gates for superconducting qubits under non-Markovian effects
Within a numerically exact simulation technique, the dissipative dynamics of a two-qubit architecture is considered in which each qubit couples to its individual noise source (reservoir). The goal is to reveal the role of subtle qubit-reservoir correlations including non-Markovian processes as a prerequisite to guide further improvements of quantum computing devices. This paper addresses the following three topics. First, we examine the validity of the rotating wave approximation imposed previo…

Holographic Entanglement Entropy in Quiver Theories
Dimitrios Chatzis, Ali Fatemiabhari, Mauro Giliberti, Madison Hammond
https://arxiv.org/abs/2509.19434 https://

Holographic Entanglement Entropy in Quiver Theories
This work presents a study of the entanglement entropy (EE) in a class of four-dimensional ${\cal N}=1$ linear quiver SCFTs deformed by the presence of a VEV. We review the holographic backgrounds dual to these theories, and calculate the EE for different Ryu-Takayanagi embeddings. We allow the embeddings to explore, in addition to the usual spatial direction, the internal coordinate $z$, associated with the quiver degrees of freedom. Via the numerical optimization of splines on triangulations,…

Entanglement distribution via satellite: an evaluation of competing protocols assuming realistic free-space optical channels
Nicholas Zaunders, Timothy C. Ralph
https://arxiv.org/abs/2510.01633

Entanglement distribution via satellite: an evaluation of competing protocols assuming realistic free-space optical channels
A key technical requirement of any future quantum network is the ability to distribute quantum-entangled resources between two spatially separated points at a high rate and high fidelity. Entanglement distribution protocols based on satellite platforms, which transmit and receive quantum resources directly via free-space optical propagation, are therefore excellent candidates for quantum networking, since the geometry and loss characteristics of satellite networks feasibly allow for up to conti…

MIPco=coRE
Junqiao Lin
https://arxiv.org/abs/2510.07162 https://arxiv.org/pdf/2510.07162

MIPco=coRE
In 2020, a landmark result by Ji, Natarajan, Vidick, Wright, and Yuen showed that MIP*, the class of languages that can be decided by a classical verifier interacting with multiple computationally unbounded provers sharing entanglement in the tensor product model, is equal to RE. We show that the class MIPco, a complexity class defined similarly to MIP* except with provers sharing the commuting operator model of entanglement, is equal to the class coRE. This shows that giving the provers two di…

Entanglement Asymmetry for Higher and Noninvertible Symmetries
Francesco Benini, Pasquale Calabrese, Michele Fossati, Amartya Harsh Singh, Marco Venuti
https://arxiv.org/abs/2509.16311

Entanglement Asymmetry for Higher and Noninvertible Symmetries
Entanglement asymmetry is an observable in quantum systems, constructed using quantum-information methods, suited to detecting symmetry breaking in states -- possibly out of equilibrium -- relative to a subsystem. In this paper we define the asymmetry for generalized finite symmetries, including higher-form and noninvertible ones. To this end, we introduce a "symmetrizer" of (reduced) density matrices with respect to the $C^*$-algebra of symmetry operators acting on the subsystem Hilbert space.…

Unveiling Entanglement's Metrological Power: Empirical Modeling of Optimal States in Quantum Metrics
Volkan Erol
https://arxiv.org/abs/2509.15954 https://

Unveiling Entanglement's Metrological Power: Empirical Modeling of Optimal States in Quantum Metrics
Using extensive numerical analysis of 20,000 randomly generated two-qubit states, we provide a quantitative analysis of the connection between entanglement measures and Maximized Quantum Fisher Information (MQFI). Our systematic study shows strong empirical relationships between the metrological capacity of quantum states and three different entanglement measures: concurrence, negativity, and relative entropy of entanglement. We show that optimization over local unitary transformations produces…

Qubit Instrumentation of Entanglement
Mark Carney
https://arxiv.org/abs/2509.18340 https://arxiv.org/pdf/2509.18340…

Simulating Topological Order on Quantum Processors
Adam Gammon-Smith, Michael Knap, Frank Pollmann
https://arxiv.org/abs/2510.07023 https://arxiv.org/pdf/2…

Simulating Topological Order on Quantum Processors
It is an ongoing quest to realize topologically ordered quantum states on different platforms including condensed matter systems, quantum simulators and digital quantum processors. Unlike conventional states characterized by their local order, these exotic states are characterized by their non-local entanglement. The consequences of topological order can be as profound as they are surprising, ranging from the emergence of fractionalized anyonic excitations to potentially providing a scalable pl…

Entanglement and apparent thermality in simulated black holes
Iason A. Sofos, Andrew Hallam, Jiannis K. Pachos
https://arxiv.org/abs/2509.22774 https://arx…

Entanglement and apparent thermality in simulated black holes
We investigate the apparent thermality of Hawking radiation in the semi-classical limit of quantum black holes using the mean-field limit of a chiral spin-chain simulator, which models fermions propagating on a black hole space-time in the continuum. In this free-theory regime, no genuine thermalisation occurs. Nevertheless, we show that a bipartition across the event horizon yields a reduced density matrix whose mode occupations follow an apparent thermal Fermi-Dirac distribution. In contrast,…

MUSS-TI: Multi-level Shuttle Scheduling for Large-Scale Entanglement Module Linked Trapped-Ion
Xian Wu, Chenghong Zhu, Jingbo Wang, Xin Wang
https://arxiv.org/abs/2509.25988 htt…

MUSS-TI: Multi-level Shuttle Scheduling for Large-Scale Entanglement Module Linked Trapped-Ion
Trapped-ion computing is a leading architecture in the pursuit of scalable and high fidelity quantum systems. Modular quantum architectures based on photonic interconnects offer a promising path for scaling trapped ion devices. In this design, multiple Quantum Charge Coupled Device (QCCD) units are interconnected through entanglement module. Each unit features a multi-zone layout that separates functionalities into distinct areas, enabling more efficient and flexible quantum operations. However…

Predictions with limited data: Bayesian (X)PINNs, entanglement surfaces and overconfidence
Filip Landgren, Marika Taylor
https://arxiv.org/abs/2509.23784 https://

Predictions with limited data: Bayesian (X)PINNs, entanglement surfaces and overconfidence
Solving differential equations from limited or noisy data remains a key challenge for physics-informed neural networks (PINNs), which are typically applied to already known and smooth solutions. In this work, we explore Bayesian PINNs and extended PINNs, (B-(X)PINNs), to solve non-linear second order differential equation typical for high energy theory, where data is only available from the boundary domain, to benchmark suitable approaches to PINNs in this category. In particular, we consider a…

Exact Relation Between Wehrl-R\'enyi Entropy and Many-Body Entanglement
Pengfei Zhang, Chen Xu, Peng Zhang
https://arxiv.org/abs/2509.16036 https://arx…

Exact Relation Between Wehrl-Rényi Entropy and Many-Body Entanglement
Quantum entanglement is key to understanding correlations and emergent phenomena in quantum many-body systems. For $N$ qubits (distinguishable spin-$1/2$ particles) in a pure quantum state, many-body entanglement can be characterized by the purity of the reduced density matrix of a subsystem, defined as the trace of the square of this reduced density matrix. Nevertheless, this approach depends on the choice of subsystem. In this letter, we establish an exact relation between the Wehrl-Rényi en…

Probing the bubble interior with entanglement entropy and bulk-cone singularities
Roberto Auzzi, Stefano Baiguera, Lihan Guo, Giuseppe Nardelli, Nicol\`o Zenoni
https://arxiv.org/abs/2509.21632

Probing the bubble interior with entanglement entropy and bulk-cone singularities
In the thin wall approximation, we study a class of asymptotically AdS black holes which contain a spherically symmetric vacuum bubble with a different (positive or negative) cosmological constant. Collapsing, expanding, and static bubble solutions are considered. Among these, expanding bubbles with positive cosmological constant can provide a way to apply the AdS/CFT correspondence to describe the physics of an expanding universe. We systematically study the causal structure of the solutions a…

Gate Teleportation vs Circuit Cutting in Distributed Quantum Computing
Shobhit Gupta, Nikolay Sheshko, Daniel J. Dilley, Alvin Gonzales, Manish K. Singh, Zain H. Saleem
https://arxiv.org/abs/2510.08894

Gate Teleportation vs Circuit Cutting in Distributed Quantum Computing
Distributing circuits across quantum processor modules will enable the execution of circuits larger than the qubit count limitations of monolithic processors. While distributed quantum computation has primarily utilized circuit cutting, it incurs an exponential growth of sub-circuit sampling and classical post-processing overhead with an increasing number of cuts. The entanglement-based gate teleportation approach does not inherently incur exponential sampling overhead, provided that quantum in…

A Framework for Distributed Resource Allocation in Quantum Networks
Nitish K. Panigrahy, Leonardo Bacciottini, C. V. Hollot, Emily A. Van Milligen, Matheus Guedes de Andrade, Nageswara S. V. Rao, Gayane Vardoyan, Don Towsley
https://arxiv.org/abs/2510.09371

A Framework for Distributed Resource Allocation in Quantum Networks
We introduce a distributed resource allocation framework for the Quantum Internet that relies on feedback-based, fully decentralized coordination to serve multiple co-existing applications. We develop quantum network control algorithms under the mathematical framework of Quantum Network Utility Maximization (QNUM), where utility functions quantify network performance by mapping entanglement rate and quality into a joint optimization objective. We then introduce QPrimal-Dual, a decentralized, sc…

Impact of Single Rotations and Entanglement Topologies in Quantum Neural Networks
Marco Mordacci, Michele Amoretti
https://arxiv.org/abs/2509.15722 https://

Impact of Single Rotations and Entanglement Topologies in Quantum Neural Networks
In this work, an analysis of the performance of different Variational Quantum Circuits is presented, investigating how it changes with respect to entanglement topology, adopted gates, and Quantum Machine Learning tasks to be performed. The objective of the analysis is to identify the optimal way to construct circuits for Quantum Neural Networks. In the presented experiments, two types of circuits are used: one with alternating layers of rotations and entanglement, and the other, similar to the …

Making the Case for Massive Islands
Hao Geng
https://arxiv.org/abs/2509.22775 https://arxiv.org/pdf/2509.22775

Making the Case for Massive Islands
It has been established in both high and low spacetime dimensions that existing constructions of entanglement islands, at least in the study of black holes, are all in the context of massive gravity. In fact, later studies realized that the graviton mass is not an accident and it is necessary for the consistency of the holographic interpretation for entanglement islands. An important lesson we learned from these studies is that the graviton mass is a manifestation of the deep relationship betwe…

Entanglement distillation on symmetric two-qutrit entangled states of rank five
Zihua Song, Lin Chen, Yongge Wang
https://arxiv.org/abs/2509.21258 https://…

Entanglement distillation on symmetric two-qutrit entangled states of rank five
Entanglement distillation is a key step in quantum information, both theoretically and practically. It has been proven that non-positive-partial transpose (NPT) entangled states of rank at most four is 1-distillable under local operation and classical communications. In this paper we investigate the distillation of a more complex family of NPT entangled states, namely a family of symmetric two-qutrit states $\r$ of rank five with given eigenvectors. We explicitly construct five families of such…

Computational Monogamy of Entanglement and Non-Interactive Quantum Key Distribution
Alex B. Grilo, Giulio Malavolta, Michael Walter, Tianwei Zhang
https://arxiv.org/abs/2510.00791

Computational Monogamy of Entanglement and Non-Interactive Quantum Key Distribution
Quantum key distribution (QKD) enables Alice and Bob to exchange a secret key over a public, untrusted quantum channel. Compared to classical key exchange, QKD achieves everlasting security: after the protocol execution the key is secure against adversaries that can do unbounded computations. On the flip side, while classical key exchange can be achieved non-interactively (with two simultaneous messages between Alice and Bob), no non-interactive protocol is known that provides everlasting secur…

Robust quantum communication through lossy microwave links
James D. Teoh, Nathanael Cottet, Patrick Winkel, Luke D. Burkhart, Luigi Frunzio, Robert J. Schoelkopf
https://arxiv.org/abs/2509.18547

Holography for de Sitter bubble geometries
Anastasios Irakleous, Fran\c{c}ois Rondeau, Nicolaos Toumbas
https://arxiv.org/abs/2509.19423 https://arxiv.org/…

Holography for de Sitter bubble geometries
We generalize the de Sitter static patch holographic proposal and the bilayer holographic entanglement entropy prescription to de Sitter geometries containing a bubble of smaller positive or vanishing cosmological constant. When the causal patch of an observer at the center of the bubble overlaps with the ``parent'' de Sitter region, we propose that the full spacetime can be holographically encoded on two holographic screens. The leading geometrical entanglement entropy between the two screens,…

Gaussian fermionic embezzlement of entanglement
Alessia Kera, Lauritz van Luijk, Alexander Stottmeister, Henrik Wilming
https://arxiv.org/abs/2509.15749 https://

Gaussian fermionic embezzlement of entanglement
Embezzlement of entanglement allows to extract arbitrary entangled states from a suitable embezzling state using only local operations while perturbing the resource state arbitrarily little. A natural family of embezzling states is given by ground states of non-interacting, critical fermions in one spatial dimension. This raises the question of whether the embezzlement operations can be restricted to Gaussian operations whenever one only wishes to extract Gaussian entangled states. We show that…

Topology and Spectral Entanglement in Cavity-Mediated Photon Scattering
Eric R. Bittner, Andrei Piryatinski
https://arxiv.org/abs/2509.15465 https://arxiv.…

Topology and Spectral Entanglement in Cavity-Mediated Photon Scattering
We develop a diagrammatic theory of cavity-mediated photon-photon interactions in a topological insulator using the SSH model. The fourth-order vertex $Γ^{(4)}(ω_1,ω_2)$ governs spectral entanglement and Kerr nonlinearity, leading to a nonlinear topological phase diagram. We also compute the electronic self-energy from vacuum photon exchange and identify symmetry-imposed limits on band renormalization. These results link band geometry to the emergence of light-matter correlations.

Replaced article(s) found for quant-ph. https://arxiv.org/list/quant-ph/new
[1/4]:
- Photon-assisted entanglement creation by minimum-error generalized quantum measurements in the st...
J. Z. Bern\'ad, G. Alber

Entangling remote qubits through a two-mode squeezed reservoir
A. Andr\'es-Juanes, J. Agust\'i, R. Sett, E. S. Redchenko, L. Kapoor, S. Hawaldar, P. Rabl, J. M. Fink
https://arxiv.org/abs/2510.07139

Entangling remote qubits through a two-mode squeezed reservoir
The distribution of entanglement across distant qubits is a central challenge for the operation of scalable quantum computers and large-scale quantum networks. Existing approaches rely on deterministic state transfer schemes or probabilistic protocols that require active control or measurement and postselection. Here we demonstrate an alternative, fully autonomous process, where two remote qubits are entangled through their coupling to a quantum-correlated photonic reservoir. In our experiment,…

Realistic Threat Models for Fiber and Free-Space Continuous-Variable Quantum Key Distribution
Zhiyue Zuo, Masoud Ghalaii, Stefano Pirandola
https://arxiv.org/abs/2510.06971 http…

Realistic Threat Models for Fiber and Free-Space Continuous-Variable Quantum Key Distribution
Future global quantum communication networks, or quantum Internet, will realize high-rate secure communication and entanglement distribution for large-scale users over long distances. Continuous variable (CV) quantum key distribution (QKD) provides a powerful setting for secure quantum communications, thanks to the use of room-temperature off-the-shelf optical devices and the potential to reach high rates. However, the achievable performance of CV-QKD protocols is fundamentally limited by the f…

Modular interface for efficient optical readout of diamond quantum memory at cryogenic temperatures via single-mode optical fibers
Akira Kamimaki, Yuhei Sekiguchi, Daisuke Ito, Taichi Fujiwara, Toshiharu Makino, Hiromitsu Kato, Hideo Kosaka
https://arxiv.org/abs/2510.07032

Modular interface for efficient optical readout of diamond quantum memory at cryogenic temperatures via single-mode optical fibers
Efficient quantum devices across various physical systems have been rapidly developed for entanglement-based quantum repeaters and spin-photon conversion; however, far less attention has been paid to standardizing platforms through quantum memory optical interfaces. We present a modular interface for color centers in diamond that is structurally isolated from device-and temperature-related variation. Despite a more than 100-fold reduction in confocal volume, we achieve highly efficient photon c…

Dynamic Scheduling in Fiber and Spaceborne Quantum Repeater Networks
Paolo Fittipaldi
https://arxiv.org/abs/2510.05854 https://arxiv.org/pdf/2510.05854

Dynamic Scheduling in Fiber and Spaceborne Quantum Repeater Networks
The problem of scheduling in quantum networks amounts to choosing which entanglement swapping operations to perform to better serve user demand. The choice can be carried out following a variety of criteria (e.g. ensuring all users are served equally vs. prioritizing specific critical applications, adopting heuristic or optimization-based algorithms...), requiring a method to compare different solutions and choose the most appropriate. We present a framework to mathematically formulate the sche…

Replaced article(s) found for quant-ph. https://arxiv.org/list/quant-ph/new
[3/3]:
- Momentum space entanglement of four fermion field theory
Weijun Kong, Qing Wang

Quantumness and its hierarchies in PT-symmetric down-conversion models
Jan Pe\v{r}ina Jr., Karol Bartkiewicz, Grzegorz Chimczak, Anna Kowalewska-Kudlaszyk, Adam Miranowicz, Joanna K. Kalaga, Wies{\l}aw Leonski
https://arxiv.org/abs/2510.06171

Quantumness and its hierarchies in PT-symmetric down-conversion models
We investigate the hierarchy of quantum correlations in a quadratic bosonic parity-time-symmetric system (PTSS) featuring distinct dissipation and amplification channels. The hierarchy includes global nonclassicality, entanglement, asymmetric quantum steering, and Bell nonlocality. We elucidate the interplay between the system physical nonlinearity -- which serves as a source of quantumness -- and the specific dynamics of bosonic PTSSs, which are qualitatively influenced by their damping and am…

Fermionic Insights into Measurement-Based Quantum Computation: Circle Graph States Are Not Universal Resources
Brent Harrison, Vishnu Iyer, Ojas Parekh, Kevin Thompson, Andrew Zhao
https://arxiv.org/abs/2510.05557

Fermionic Insights into Measurement-Based Quantum Computation: Circle Graph States Are Not Universal Resources
Measurement-based quantum computation (MBQC) is a strong contender for realizing quantum computers. A critical question for MBQC is the identification of resource graph states that can enable universal quantum computation. Any such universal family must have unbounded entanglement width, which is known to be equivalent to the ability to produce any circle graph state from the states in the family using only local Clifford operations, local Pauli measurements, and classical communication. Yet, i…

Implementation of multiparticle quantum speed limits on observables
Rui-Heng Miao, Zhao-Di Liu, Chen-Xi Ning, Yu-Cong Hu, Hao Zhang, Chuan-Feng Li, Guang-Can Guo
https://arxiv.org/abs/2510.05794

Implementation of multiparticle quantum speed limits on observables
The energy-time uncertainty relation limits the maximum speed of quantum system evolution and is crucial for determining whether quantum tasks can be accelerated. However, multiparticle quantum speed limits have not been experimentally explored. In this work, we experimentally verify that both multiparticles and entanglement can accelerate the quantum speed on observables in two-particle systems based on ultrahigh precision control of quantum evolution time. Furthermore, we experimentally prove…

Quantum interference between autonomous dissimilar quantum light sources for hybrid quantum networks
Kyu-Young Kim, Heewoo Kim, Dong Hyun Park, Jinhyuk Bea, Gyeongmin Ju, Suk In Park, Jin Dong Song, Je-Hyung Kim, Han Seb Moon
https://arxiv.org/abs/2510.05607

Quantum interference between autonomous dissimilar quantum light sources for hybrid quantum networks
Hybrid quantum systems play a crucial role in advancing scalable and versatile quantum networks as they combine the strengths of different quantum platforms. An important challenge for the development of hybrid quantum networks lies in interfacing heterogeneous quantum nodes and distributing entanglement among them. Single photons emitted from these dissimilar quantum nodes typically show distinct spectral and temporal properties. Therefore, they necessitate spectral filtering and temporal sync…

Quantum Reverse Shannon Theorem Simplified
Gilad Gour
https://arxiv.org/abs/2510.04552 https://arxiv.org/pdf/2510.04552

Quantum Reverse Shannon Theorem Simplified
We revisit the quantum reverse Shannon theorem, a central result in quantum information theory that characterizes the resources needed to simulate quantum channels when entanglement is freely available. We derive a universal additive upper bound on the smoothed max-information in terms of the sandwiched Rényi mutual information. This bound yields tighter single-shot results, eliminates the need for the post-selection technique, and leads to a conceptually simpler proof of the quantum reverse S…

Harnessing optical disorder for Bell inequalities violation
Baptiste Courme, Malo Joly, Adrian Makowski, Sylvain Gigan, Hugo Defienne
https://arxiv.org/abs/2509.21052 https://…

Harnessing optical disorder for Bell inequalities violation
Bell inequalities are a cornerstone of quantum physics. By carefully selecting measurement bases (typically polarization), their violation certifies quantum entanglement. Such measurements are disrupted by the presence of optical disorder in propagation paths, including polarization or spatial mode mixing in fibers and through free-space turbulence. Here, we demonstrate that disorder can instead be exploited as a resource to certify entanglement via a Bell inequality test. In our experiment, on…

Counterdiabatic driving at Rydberg excitation for symmetric $C_Z$ gates with ultracold neutral atoms
I. I. Beterov, K. V. Kozenko, P. Xu, I. I. Ryabtsev
https://arxiv.org/abs/2510.04766

Counterdiabatic driving at Rydberg excitation for symmetric $C_Z$ gates with ultracold neutral atoms
We extend the scheme of neutral atom Rydberg $C_Z$ gate based on double sequence of adiabatic pulses applied symmetrically to both atoms using counterdiabatic driving in the regime of Rydberg blockade. This provides substantial reducing of quantum gate operation times (at least five times) compared to previously proposed adiabatic schemes, which is important for high-fidelity entanglement due to finite Rydberg lifetimes. We analyzed schemes of adiabatic rapid passage with counterdiabatic drivin…

Exact Solvability and Integrability Signatures in a Periodically Driven Infinite-Range Spin Chain: The Case of Floquet interval $\pi/2$
Harshit Sharma, Sashmita Rout, Avadhut V. Purohit, Udaysinh T. Bhosale
https://arxiv.org/abs/2509.19991

Exact Solvability and Integrability Signatures in a Periodically Driven Infinite-Range Spin Chain: The Case of Floquet interval $π/2$
We study the signatures of quantum integrability (QI) in a spin chain model, having infinite-range Ising interaction and subjected to a periodic pulse of an external magnetic field. We analyze the unitary operator, its eigensystem, the single-qubit reduced density matrix, and the entanglement dynamics for arbitrary initial state for any $N$. The QI in our model can be identified through key signatures such as the periodicity of entanglement dynamics and the time-evolved unitary operator, and hi…

Efficient formulation of quantum network under amplitude damping noise: Highlighting benefits over its Pauli-twirled counterpart
Sudipta Mondal, Pritam Halder, Stav Haldar, Aditi Sen De
https://arxiv.org/abs/2509.18064

Efficient formulation of quantum network under amplitude damping noise: Highlighting benefits over its Pauli-twirled counterpart
At the heart of building a large-scale quantum internet lies the challenge of establishing long-distance entanglement using quantum repeaters, which mitigate direct transmission losses but introduce additional noise in the nodes via interactions with the environment and imperfect operations. This effect has typically been studied under a simplifying Pauli channel assumption. Our study focuses on distributing end-to-end entanglement in a homogeneous, repeater-based linear quantum network operati…

From Bell Products to GHZ: Quantum Memories via Emergent Hamiltonians
Anubhab Sur, Qiujiang Guo, Rubem Mondaini
https://arxiv.org/abs/2510.01117 https://ar…

From Bell Products to GHZ: Quantum Memories via Emergent Hamiltonians
With the advent of exquisite quantum emulators, storing highly entangled many-body states becomes essential. While entanglement typically builds over time when evolving a quantum system initialized in a product state, freezing that information at any given instant requires quenching to a Hamiltonian with the time-evolved state as an eigenstate, a concept we realize via an Emergent Hamiltonian framework. While the Emergent Hamiltonian is generically non-local and may lack a closed form, we show …

Advantage of utilizing nonlocal magic resource in Haar-random circuits
Xiao Huang, Guanhua Chen, Yao Yao
https://arxiv.org/abs/2509.26342 https://arxiv.org…

Advantage of utilizing nonlocal magic resource in Haar-random circuits
In design and simulation of quantum circuits with multiple units, the computational ability is greatly limited by quickly increasing entanglement, and the ordinary sampling methods normally exhibit low efficiency. Herein, we uncover an intrinsic scaling law of the nonlocal magic resource and the bond dimension of matrix product states in Haar-random quantum circuits, that is, the nonlocal magic resource is converged on a bond dimension in logarithmic scale with the system size. It means, in the…

Learning with errors may remain hard against quantum holographic attacks
Yunfei Wang, Xin Jin, Junyu Liu
https://arxiv.org/abs/2509.22833 https://arxiv.org…

Learning with errors may remain hard against quantum holographic attacks
The Learning with Errors (LWE) problem underlies modern lattice-based cryptography and is assumed to be quantum hard. Recent results show that estimating entanglement entropy is as hard as LWE, creating tension with quantum gravity and AdS/CFT, where entropies are computed by extremal surface areas. This suggests a paradoxical route to solving LWE by building holographic duals and measuring extremal surfaces, seemingly an easy task. Three possible resolutions arise: that AdS/CFT duality is intr…

Crosslisted article(s) found for quant-ph. https://arxiv.org/list/quant-ph/new
[1/1]:
- Entanglement and apparent thermality in simulated black holes
Iason A. Sofos, Andrew Hallam, Jiannis K. Pachos