Tootfinder

"Schrimpf and his colleagues trained a model to generate sentences that, when read, would activate or suppress neural activity in the reader’s brain," exerting "noninvasive control over high-level brain activity" https://www.quantamagazine.org…

How AI Models Are Helping to Understand — and Control — the Brain | Quanta Magazine
Martin Schrimpf is crafting bespoke AI models that can induce control over high-level brain activity.

Analog Quantum Phase Estimation with Single-Mode Readout
Wei-Chen Lin, Chiao-Hsuan Wang
https://arxiv.org/abs/2506.15668 https://arxi…

Analog Quantum Phase Estimation with Single-Mode Readout
Eigenvalue estimation is a central problem for demonstrating quantum advantage, yet its implementation on digital quantum computers remains limited by circuit depth and operational overhead. We present an analog quantum phase estimation (aQPE) protocol that extracts the eigenenergies of a target Hamiltonian via continuous time evolution and single-mode cavity measurement. By encoding eigenvalue information as conditional cavity phase-space rotations, the scheme avoids deep quantum circuits and …

Time-bin encoded quantum key distribution over 120 km with a telecom quantum dot source
Jipeng Wang, Joscha Hanel, Zenghui Jiang, Raphael Joos, Michael Jetter, Eddy Patrick Rugeramigabo, Simone Luca Portalupi, Peter Michler, Xiao-Yu Cao, Hua-Lei Yin, Shan Lei, Jingzhong Yang, Michael Zopf, Fei Ding
https://arxiv.org/abs/2506.155…

Time-bin encoded quantum key distribution over 120 km with a telecom quantum dot source
Quantum key distribution (QKD) with deterministic single photon sources has been demonstrated over intercity fiber and free-space channels. The previous implementations relied mainly on polarization encoding schemes, which are susceptible to birefringence, polarization-mode dispersion and polarization-dependent loss in practical fiber networks. In contrast, time-bin encoding offers inherent robustness and has been widely adopted in mature QKD systems using weak coherent laser pulses. However, i…

Don't miss today's packed Metacurity for a ton of critical infosec developments you should know, including
--UK to spend $1.1 billion relocating Afghan helpers following data breach
--DOGE worker published the private key for four dozen-plus LLMs,
--US gov't IT contractor to pay $14.75m fine for overstated cyber services,
--Italian cops arrest Romanian behind 'Diskstation' ransomware gang,
--OMB readies post-quantum standard,
--MSFT'…

UK to spend $1.1 billion relocating Afghan helpers following data breach
DOGE worker published the private key for four dozen-plus LLMs, US gov't IT contractor to pay $14.75m fine for overstated cyber services, Italian cops arrest Romanian behind 'Diskstation' ransomware gang, OMB readies post-quantum standard, MSFT's 'digital escorts' leave DoD vulnerable, much more

Hybrid quantum lattice model: Polaritons, photons, and spin waves propagation
Maritza Ahumada, Natalia Valderrama-Quinteros, Diego Tancara, Guillermo Romero
https://arxiv.org/abs/2507.12319

Hybrid quantum lattice model: Polaritons, photons, and spin waves propagation
Controlling the propagation of quantum excitations in low-dimensional quantum systems is pivotal for advancing quantum technologies, including communication networks and quantum simulators. We propose a one-dimensional hybrid quantum lattice model comprising coupled cavity quantum electrodynamics (QED) units. Each unit integrates a single-mode cavity that interacts with a two-level system (TLS), featuring direct coupling between adjacent TLLs. This configuration enables the coherent propagation…

Join Andrew Musselman and Trevor Grant as they present the latest developments in Mahout's new quantum compute layer, Qumat. They will provide an overview of the project, explain why Qumat was developed, and demonstrate its current capabilities. They will also present a demo of Qumat in action and conclude with calls to action for researchers and engineers who are interested in using and contributing to the project.
Learn more:

High-expressibility Quantum Neural Networks using only classical resources
Marco Maronese, Francesco Ferrari, Matteo Vandelli, Daniele Dragoni
https://arxiv.org/abs/2506.13605

High-expressibility Quantum Neural Networks using only classical resources
Quantum neural networks (QNNs), as currently formulated, are near-term quantum machine learning architectures that leverage parameterized quantum circuits with the aim of improving upon the performance of their classical counterparts. In this work, we show that some desired properties attributed to these models can be efficiently reproduced without necessarily resorting to quantum hardware. We indeed study the expressibility of parametrized quantum circuit commonly used in QNN applications and …

Reconstruction of Noise from Dynamical Mode Decomposition in Quantum Systems
Adva Baratz, Loris Maria Cangemi, Assaf Hamo, Sivan Refaely-Abramson, Amikam Levy
https://arxiv.org/abs/2507.05797

Reconstruction of Noise from Dynamical Mode Decomposition in Quantum Systems
Noise fundamentally limits the performance of quantum systems by degrading coherence and reducing control fidelity. Characterizing this noise is essential for improving measurement accuracy, understanding environmental interactions, and designing effective control strategies. However, extracting its spectral characteristics and associated dephasing times from limited experimental data remains a key challenge. Here, we introduce a data-driven framework based on Dynamical Mode Decomposition (DM…

A cavity array microscope for parallel single-atom interfacing
Adam L. Shaw, Anna Soper, Danial Shadmany, Aishwarya Kumar, Lukas Palm, Da-Yeon Koh, Vassilios Kaxiras, Lavanya Taneja, Matt Jaffe, David I. Schuster, Jonathan Simon
https://arxiv.org/abs/2506.10919

A cavity array microscope for parallel single-atom interfacing
Neutral atom arrays and optical cavity QED systems have developed in parallel as central pillars of modern experimental quantum science. While each platform has demonstrated exceptional capabilities-such as high-fidelity quantum logic in atom arrays, and strong light-matter coupling in cavities-their combination holds promise for realizing fast and non-destructive atom measurement, building large-scale quantum networks, and engineering hybrid atom-photon Hamiltonians. However, to date, experime…

Magic Steady State Production: Non-Hermitian and Stochastic pathways
Pablo Martinez-Azcona, Matthieu Sarkis, Alexandre Tkatchenko, Aur\'elia Chenu
https://arxiv.org/abs/2507.08676

Magic Steady State Production: Non-Hermitian and Stochastic pathways
Universal quantum computers require states with both entanglement and non-stabilizerness, the latter property being commonly known as \textit{quantum magic}. Here, we introduce a protocol that prepares magic steady states by leveraging non-Hermitian dynamics, which, contrary to unitary dynamics, can host pure-state attractors. We investigate the dissipative qubit, in which we find the optimal parameters to prepare $|H\rangle$ and $|T\rangle$ states. Interestingly, this approach does n…