Tootfinder

The (PXP)$^2$ model: long-range quantum scars in optical cavities
Hossein Hosseinabadi, Riccardo J. Valencia-Tortora, Aleksandr N. Mikheev, Darrick E. Chang, Johannes Zeiher, Roderich Moessner, Jamir Marino
https://arxiv.org/abs/2510.02246

The (PXP)$^2$ model: long-range quantum scars in optical cavities
Rydberg-cavity systems are emerging as promising platforms for quantum simulation and quantum information processing. These hybrid architectures combine two complementary interaction mechanisms: cavity photons mediate collective long-range couplings, while Rydberg excitations generate strong short-range interactions. Together, they offer a setting for engineering many-body phases characterized by a hierarchy of interactions across widely different length scales. In this work, we introduce a min…

Micro-Electro-Mechanical System Vapor Cells With Passivated Internal Cavities
Rajesh Pandiyan, Sanyasi Bobbara, Somayeh Mirzaee, Su-Peng Yu, Ruoxi Wang, Adam Sibenik, Reza Kohandani, James P. Shaffer
https://arxiv.org/abs/2512.00245

Three-Dimensional Niobium Coaxial Cavity with $\sim0.1\,$second Lifetime
Takaaki Takenaka, Takayuki Kubo, Imran Mahoob, Kosuke Mizuno, Hitoshi Inoue, Takayuki Saeki, Shiro Saito
https://arxiv.org/abs/2510.01819

Three-Dimensional Niobium Coaxial Cavity with $\sim0.1\,$second Lifetime
We report on the internal quality factor of a three-dimensional niobium quarter-wave coaxial cavity, with mid-temperature annealing, exhibiting $Q_{\rm int} \gtrsim 3\times10^9$ at the single-photon level below 20\,mK, which corresponds to an internal photon lifetime of $τ_{\rm int}\sim90\,\mathrm{ms}$. Moreover, $Q_{\rm int}$ of the mid-temperature annealed cavities remains almost unchanged even after several cooldown cycles and air exposure. These results suggest that stable low-loss niobium…

Astrometric view of companions in the inner dust cavities of #protoplanetary disks: https://arxiv.org/abs/2512.00157 -> Gaia finds hints of planets in baby star systems: https://www.esa.int/ESA_Multimedia/Images/2025/12/Gaia_finds_hints_of_planets_in_baby_star_systems

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 …

It always cracks me up when I see stuff like this. I'm now on my second 100yo home, and in both cases the window weight cavities were just empty despite having windows "professionally" installed. Now, my first 100yo home had the windows replaced in the 70s/80s, so.. I can forgive that. The 2nd 100yo home, tho, had the windows replaced in the 2000s. They also insulated from the interior (putting foamboard against the brick, sealed w/ spray foam, then 2x3 metal studs to build a n…

A quantitative performance analysis of two different interferometric alignment sensing schemes for gravitational wave detectors
Raed Diab, Alvaro Herrera, Chance Jackson, Paul Fulda
https://arxiv.org/abs/2510.09774

A quantitative performance analysis of two different interferometric alignment sensing schemes for gravitational wave detectors
Precise laser alignment in optical cavities is essential for high-precision laser interferometry. We report on a table-top optical experiment featuring two alignment sensing schemes: the conventional Wavefront Sensing (WFS) scheme which uses quadrant photodetectors (QPDs) to recover optical alignment, and the newly developed Radio Frequency Jitter Alignment Sensing (RFJAS) scheme, which uses an electro-optic beam deflector (EOBD) to apply fast angular modulation. This work evaluates the perform…

Ultrafast optical gating in a nonlinear lithium niobate microcavity
Ouri Karni, Chirag Vaswani, Thibault Chervy
https://arxiv.org/abs/2510.11965 https://ar…

Ultrafast optical gating in a nonlinear lithium niobate microcavity
Recent advances in optical simulation and computational techniques have renewed interest in high-finesse optical cavities for applications such as enhancing light-matter interactions, engineering complex photonic band structures, and storing quantum information. However, the extended interaction times enabled by these cavities often come at the cost of slow optical read-out protocols and limited control over system transients. To address this challenge, we demonstrate an ultrafast intra-cavity …

Green's function expansion for multiple coupled optical resonators with finite retardation using quasinormal modes
Robert Fuchs, Juanjuan Ren, Stephen Hughes, Marten Richter
https://arxiv.org/abs/2510.12511

Green's function expansion for multiple coupled optical resonators with finite retardation using quasinormal modes
The electromagnetic Green's function is a crucial ingredient for the theoretical study of modern photonic quantum devices, but is often difficult or even impossible to calculate directly. We present a numerically efficient framework for calculating the scattered electromagnetic Green's function of a multi-cavity system with spatially separated open cavities (with arbitrary shape, dispersion and loss) and finite retardation times. The framework is based on a Dyson scattering equation that enable…

Scalable Quantum Monte Carlo Method for Polariton Chemistry via Mixed Block Sparsity and Tensor Hypercontraction Method
Yu Zhang
https://arxiv.org/abs/2510.11634 https://…

Scalable Quantum Monte Carlo Method for Polariton Chemistry via Mixed Block Sparsity and Tensor Hypercontraction Method
We present a reduced-scaling auxiliary-field quantum Monte Carlo (AFQMC) framework designed for large molecular systems and ensembles, with or without coupling to optical cavities. Our approach leverages the natural block sparsity of Cholesky decomposition (CD) of electron repulsion integrals in molecular ensembles and employs tensor hypercontraction (THC) to efficiently compress low-rank Cholesky blocks. By representing the Cholesky vectors in a mixed format, keeping high-rank blocks in block-…

Tunable magnon-phonon cavity via structural phase transition
Chunli Tang, Yujie Zhu, Dayne Sasaki, Jiaxuan Wu, Harshil Goyal, Yuzan Xiong, Masoud Mahjouri-Samani, Xiang Meng, Jia-Mian Hu, Yayoi Takamura, Wei Zhang, Wencan Jin
https://arxiv.org/abs/2510.06464

Tunable magnon-phonon cavity via structural phase transition
Strong coupling between two quantized excitations in a cavity has the potential to lead to hybridized states that bestow novel quantum phenomena as required for emerging applications. In particular, tunable hybrid magnon-phonon cavities with precise control knobs are in pressing demand for developing quantum functionalities in solid-state platforms. Here, using a combination of synthesis and characterization tools, we present an epitaxial La0.7Sr0.3MnO3/SrTiO3 (LSMO/STO) heterostructure that ma…

Replaced article(s) found for cond-mat.supr-con. https://arxiv.org/list/cond-mat.supr-con/new
[1/1]:
- Local Limit Disorder Characteristics of Superconducting Radio Frequency Cavities
Anastasiya Lebedeva, Mat\'u\v{s} Hladk\'y, Marcel Pol\'ak, Franti\v{s}ek He…

A laser with instability reaching $4 \times 10^{-17}$ based on a 10-cm-long silicon cavity at sub-5-K temperatures
Zhi-Ang Chen, Hao-Ran Zeng, Wen-Wei Wang, Han Zhang, Run-Qi Lei, Jian-Zhang Li, Cai-Yin Pang, She-Song Huang, Xibo Zhang
https://arxiv.org/abs/2510.06636

A laser with instability reaching $4 \times 10^{-17}$ based on a 10-cm-long silicon cavity at sub-5-K temperatures
The realization of ultra-stable lasers with $10^{-17}$-level frequency stability has enabled a wide range of researches on precision metrology and fundamental science, where cryogenic single-crystalline cavities constitute the heart of such ultra-stable lasers. For further improvements in stability, increasing the cavity length at few-kelvin temperatures provides a promising alternative to utilizing relatively short cavities with novel coating, but has yet to be demonstrated with state-of-the-a…

Simulation of the thermoelectric effect in a multi-metallic superconducting cavity
N. K. Raut, N. Stilin, J. Vennekate, S. Wang, G. Ciovati
https://arxiv.org/abs/2510.08285 http…

Simulation of the thermoelectric effect in a multi-metallic superconducting cavity
Superconducting radio frequency accelerating cavities made with different material layers, such as copper, Nb or Nb3Sn, are susceptible to thermoelectric effects due to differences in Seebeck coefficients between the metals. A temperature gradient across the surfaces can drive thermoelectric currents, which may impact the cavity performance. A layered Cu/Nb/Nb3Sn single cell cavity was tested with cryocoolers in 2022. Three heaters were mounted on the cavity surface at different locations and t…

Polaritonic spectra of optical Mie voids
Evgeny Ryabkov, Mingzhao Song, Andrey A. Bogdanov, Denis G. Baranov
https://arxiv.org/abs/2510.04650 https://arxiv…

Polaritonic spectra of optical Mie voids
The progress in understanding the optical and microscopic properties of polaritons relies on various optical cavities to confine electromagnetic radiation, which causes a demand for new platforms with higher $Q$-factors and better fabrication robustness. In this context, so called Mie voids -- spherical cavities inside a dielectric medium, where the light confinement occurs due to refractive index contrast at the air-dielectric interface -- present a substantial interest. Here, we theoretically…

Bridging the gap between ultrafast optics and resonant photonics via omni-resonance
Abbas Shiri, Kenneth L. Schepler, Ayman F. Abouraddy
https://arxiv.org/abs/2510.12002 https:/…

Bridging the gap between ultrafast optics and resonant photonics via omni-resonance
High-finesse planar Fabry-P{é}rot (FP) cavities spectrally filter the incident field at discrete resonances, and thus cannot be utilized to resonantly enhance the field of ultrashort pulses. Introducing judicious angular dispersion into a pulse can give rise to `omni-resonance', whereby the entire bandwidth of a spatiotemporally structured ultrafast pulse couples to a single longitudinal cavity resonance, even when the pulse bandwidth far exceeds the resonant linewidth. Here we show that omni-…

Quasi Normal Modes in Dispersive Photonic Time-Crystals
Calvin M. Hooper, Ian R. Hooper, Simon A. R. Horsley
https://arxiv.org/abs/2510.12438 https://arxiv…

Quasi Normal Modes in Dispersive Photonic Time-Crystals
Quasinormal modes characterise the transient response of static optical cavities. Here, we introduce the notion of a Floquet quasinormal mode to describe transient responses in photonic time crystals. Contrasting their static counterparts, exceptional points associated with symmetry transitions are an inherent feature, as modes spontaneously and non-perturbatively lock their phase to the oscillations of the material. We further investigate the limiting behaviour of the Floquet quasinormal modes…

Quantum Emission in Monolayer WSe2 Transferred onto InP Nanowires
Palwinder Singh, Jasleen Kaur Jagde, Megha Jain, Edith Yeung, David B. Northeast, Simona Moisa, Seid J. Mohammed, Jean Lapointe, Una Rajnis, Annika Kienast, Philip J. Poole, Dan Dalacu, Kimberley C. Hall
https://arxiv.org/abs/2510.04198

Quantum Emission in Monolayer WSe2 Transferred onto InP Nanowires
Localized quantum emitters in transition-metal dichalcogenides (TMDs) have recently emerged as solid-state candidates for on-demand sources of single photons. Due to the role of strain in the site-selective creation of TMD emitters, their hybrid integration into photonic structures such as cavities and waveguides is possible using pick-and-place methods. Here we investigate quantum emission from a hybrid structure consisting of a monolayer of WSe2 interfaced with horizontally aligned InP nanowi…