quant-ph papers | Gist.Science

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

Liouvillian gap closing--bound states in the continuum connection and diverse dynamics in a giant-atom waveguide QED setup

This paper establishes a direct connection between Liouvillian gap closing in open-system master equations and the formation of bound states in the continuum in the full Hamiltonian description, demonstrating how tuning the number of these bound states in a giant-atom waveguide setup enables flexible control over diverse dynamical regimes ranging from Rabi oscillations to fractional decay.

Hongwei Yu, Mingzhu Weng, Zhihai Wang, Jin Wang2026-02-03

⚛️ quantum physics

Deterministic Zeroth-Order Mirror Descent via Vector Fields with A Posteriori Certification

This paper introduces a deterministic zeroth-order mirror descent framework driven by general vector fields that enables a posteriori certification of last-iterate convergence via relative-smoothness inequalities, unifying information-geometric algorithms and establishing explicit error bounds for finite-difference implementations under a punctured-neighborhood generalized star-convexity condition.

Masahito Hayashi2026-02-03

🔢 mathematics

Higher-order transformations of bidirectional quantum processes

This paper characterizes the most general forms of input-output indefiniteness in bidirectional quantum devices by establishing a hierarchy of higher-order transformations built from bistochastic channels, which encompasses both indefinite local directions and indefinite global causal orders within a time-symmetric quantum framework.

Luca Apadula, Alessandro Bisio, Giulio Chiribella, Paolo Perinotti, Kyrylo Simonov2026-02-03

⚛️ quantum physics

Universal Quantum Birthmark: Ghost of the quantum past

This paper establishes that quantum dynamics universally preserves a permanent "birthmark" of initial conditions through enhanced long-time return probabilities, a symmetry-controlled effect that persists even in chaotic systems and challenges classical expectations of ergodicity and thermalization.

Ivy Xiaoya, Anton M. Graf, Eric J. Heller, Joonas Keski-Rahkonen2026-02-03

⚛️ quantum physics

Noise Resilient 1SDIQKD for Practical Quantum Networks

This paper extends one-sided device-independent quantum key distribution (1SDI-QKD) to realistic noisy channels, revealing that dephasing is more tolerable than amplitude damping or depolarizing noise, that steering violation rather than mere entanglement dictates security, and that integrating the BBPSSW purification protocol can effectively restore secure key rates in metropolitan-scale networks.

Syed M Arslan, Muhammad T Rahim, Asad Ali, Hashir Kuniyil, Saif Al Kuwari2026-02-03

⚛️ quantum physics

Electro-optic conversion of itinerant Fock states

This paper demonstrates the first successful on-demand electro-optic conversion of itinerant non-Gaussian microwave Fock states from a superconducting qubit to telecom photons with negligible added noise, establishing a viable pathway for connecting modular cryogenic quantum nodes via optical fiber.

Thomas Werner, Erfan Riyazi, Samarth Hawaldar, Rishabh Sahu, Georg Arnold, Paul Falthansl-Scheinecker, Jennifer A. Sánch (…)2026-02-03

🔢 mathematics

Spectral moments of Bures-Hall ensemble and applications to entanglement entropy

This paper establishes a novel recurrence relation for the real-valued spectral moments of the Bures-Hall ensemble using Christoffel-Darboux formulas, which is then applied to rigorously derive the average von Neumann entropy and quantum purity, confirming recent conjectures by Ayana Sarkar and Santosh Kumar.

Linfeng Wei, Youyi Huang, Lu Wei2026-02-03

⚛️ general relativity

Tripartite quantum steering in Schwarzschild spacetime

This paper investigates how Hawking radiation in Schwarzschild spacetime influences tripartite quantum steering and its asymmetry across different mode accessibility scenarios, revealing that while radiation generally disrupts steering in fully accessible systems, it can paradoxically enhance steering in partially accessible configurations, thereby establishing observable signatures of black hole effects on quantum correlations.

Guang-Wei Mi, Xiaofen Huang, Tinggui Zhang2026-02-03

⚛️ quantum physics

A Deflationary Account of Quantum Theory and its Implications for the Complex Numbers

This paper proposes a deflationary interpretation of quantum theory where systems are viewed as indivisible stochastic processes in configuration space, arguing that complex numbers are necessary specifically to ensure the Hilbert-space formalism functions as a valid Markovian embedding.

Jacob A. Barandes2026-02-03

⚛️ quantum physics

The Quantum Learning Menagerie (A survey on Quantum learning for Classical concepts)

This paper surveys the field of quantum learning theory within the PAC framework, focusing on the complexity separations between classical and quantum learning when accessing various labeling oracles, while consolidating existing results and presenting 23 open problems to highlight current research frontiers.

Sagnik Chatterjee2026-02-03

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