⚛️ Category

quant-ph

8945 papers

Quantum physics explores the strange and often counterintuitive rules that govern the universe at its smallest scales. This field investigates how particles like electrons and photons behave in ways that defy our everyday intuition, forming the backbone of modern technologies from lasers to future quantum computers. While the mathematics can be daunting, the core ideas promise to revolutionize how we understand reality and process information.

At Gist.Science, we make these complex discoveries accessible to everyone. We systematically process every new preprint published in the Quant-Ph category on arXiv, transforming dense academic papers into clear, plain-language explanations alongside detailed technical summaries. Whether you are a seasoned researcher or a curious reader, our goal is to bridge the gap between cutting-edge theory and human understanding.

Below are the latest papers in quantum physics, distilled to help you grasp the newest breakthroughs without getting lost in the jargon.

⚛️ quantum physics

Emergent Non-Markovian Nonlinear Qubit From Collective Spin Interactions

This paper demonstrates that a closed interacting many-body system, specifically the Kitagawa-Ueda one-axis twisting model, can intrinsically generate a controlled non-Markovian dephasing channel on a reduced nonlinear qubit through finite-size corrections to a nonlinear mean-field limit, providing a microscopic derivation of non-Markovian noise that is quantitatively accurate for systems with approximately one hundred qubits.

Gregory T. Carroll, Michael R. Geller, Andre Erpenbeck2026-08-11
⚛️ quantum physics

A Universal Entanglement Witness Generator

This paper introduces a fully general, machine-learning-based framework that automatically generates optimized, noise-robust entanglement witnesses for arbitrary multipartite qubit and qudit systems (including non-stabilizer states) using only local measurements, achieving superior performance in noise tolerance and measurement efficiency compared to existing methods across both numerical simulations and experimental platforms.

Aiden R. Rosebush, Alexander C. B. Greenwood, Andi Shahaj, Li Qian2026-08-11
⚛️ general relativity

Causal-diamond thermalization induces nonseparability in N-partite quantum systems

This paper demonstrates that causal-diamond thermalization, induced by an observer's finite lifetime, uniquely enhances the nonseparability of fermionic WW states while degrading bosonic nonseparability, revealing that particle statistics, entanglement structure, and observer lifetime jointly determine the robustness of multipartite quantum correlations in relativistic spacetimes.

Hui-Chen Yang, Shu-Min Wu2026-08-11
⚛️ quantum physics

Biorthogonal-only Floquet Dynamical Quantum Phase Transitions

This paper demonstrates the existence of a distinct "biorthogonal-only" Floquet dynamical quantum phase transition regime in a non-Hermitian Su-Schrieffer-Heeger chain, proving that biorthogonal and self-normal criticalities are not concomitant and are fundamentally distinguished by their unique relationships to exceptional lines and critical time structures.

Jiangrong Wen, Qidong Yuan, Zi-Xiang Hu, Jian-Jun Dong2026-08-11
⚛️ quantum physics

Near-Optimal Gap Amplification for Nonnegative Unentangled Quantum Proofs

This paper establishes a near-optimal gap amplification result for the class QMA+(2)\mathsf{QMA}^{+}(2) of nonnegative unentangled quantum proofs, demonstrating that it captures NEXP\mathsf{NEXP} for a specific completeness-soundness gap while remaining equal to real-amplitude QMA(2)\mathsf{QMA}(2) for slightly smaller gaps, thereby revealing a sharp complexity phase transition.

Masayuki Miyamoto2026-08-11
⚛️ quantum physics

Time-reparameterisation invariant quantum evolution law: the lack of absolute time does not imply a stationary global state

This paper challenges the assumption that the absence of absolute time necessitates a stationary global quantum state by proposing a time-reparameterisation invariant evolution law that reproduces Schrödinger trajectories without fixing their speed, thereby recovering standard predictions via internal clocks while maintaining a non-stationary global state.

Ognyan Oreshkov, Denis Bouvy2026-08-11
🔬 atomic physics

Bell nonlocality with directly generated telecom-band spin-photon entanglement

This paper demonstrates the first verification of Bell nonlocality using directly generated, high-fidelity spin-photon entanglement between a single rubidium atom and a telecom C-band photon, achieved via resonant excitation and cavity assistance to enable scalable quantum networks.

Dong-Yu Huang, Jian Wang, Xiao-Long Zhou, Ze-Min Shen, Si-Jian He, Qi-Yang Huang, Yi-Jia Liu, Yu-Shu Chen, Quan Jiang, C (…)2026-08-11