⚛️ Category

quant-ph

10879 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

Towards the Geometry of Quantum Optical Measurements: Kraus Trajectories in the Instrumental Weyl-Heisenberg Group Manifold

This paper utilizes the Instrument Manifold Program and a Harish-Chandra-like decomposition of the twelve-dimensional Instrumental Weyl-Heisenberg group (IWH12\mathrm{IWH}^{\textbf{12}}) to geometrically model Kraus operator trajectories, thereby enabling the autonomous navigation of this manifold to define and analyze generalized quantum optical measurements such as "slomodyne" and adaptive squeezed 'dyne measurements.

Tzula B. Propp, Chris S. Jackson2026-10-14
⚛️ quantum physics

Bell's go theorem: regaining local causality with a new notion of realism

This paper proposes a generalized ontological framework based on "records" within point-free topology that redefines realism to allow for local causality without requiring conspiratorial fine-tuning, thereby demonstrating that quantum statistics can be explained by locally causal models that violate classical probability's inclusion-exclusion law.

Lorenzo Catani, Nesta van der Schaaf, Rui Soares Barbosa2026-10-14
⚛️ quantum physics

Quantum state texture of maximal-resource Fourier states under Hawking radiation

This paper investigates the degradation and redistribution of quantum state texture (QST) in maximal-resource Fourier states under Hawking radiation, revealing that orthogonality protection preserves maximal QST during single-mode radiation while simultaneous two-mode radiation causes temperature-dependent decay alongside a compensatory redistribution of resources between modes.

Shengyan Ma, Yiding Wang, Xiaofen Huang, Tinggui Zhang2026-10-14
⚛️ quantum physics

Deterministic positioning accuracy of B centers in hBN by electron irradiation

This study characterizes the deterministic positioning accuracy of B centers in hexagonal boron nitride created via electron beam irradiation, identifying the beam-emitter interaction extent and precursor density as key factors limiting spatial precision to a 40 nm standard deviation while outlining a pathway to achieve sub-10 nm accuracy.

A. Núñez Marcos, C. Arnold, J. Barjon, S. Buil, J. -P. Hermier, A. Delteil2026-10-14
⚛️ quantum physics

Magic-Free Certification of Logical Error Rates in Universal Fault-Tolerant Circuits

This paper introduces a "magic-free" certification protocol that efficiently verifies whether universal fault-tolerant quantum circuits operate below a predefined logical error rate by using deterministic trap circuits indistinguishable from the target under stochastic noise, thereby avoiding the consumption of costly magic states while remaining agnostic to specific codes and decoders.

Gebrat Porta-San Miguel, Shahram Panahiyan, Dieter Jaksch2026-10-14
⚛️ quantum physics

Benchmarking a randomized quantum algorithm for estimating expectation values of molecular observables

This paper benchmarks a randomized quantum algorithm for estimating molecular observables on hydrogen and cytochrome P450 systems, revealing that while analytical error bounds are loose, the resulting measurement overhead remains prohibitively high for industrial applications, indicating a need for significant algorithmic improvements.

Anna Schroeder, Gian-Luca R. Anselmetti, Matthias Degroote, Florian Dommert, Michael Kaicher, Chandan Kumar, Michael Str (…)2026-10-14
⚛️ quantum physics

Time-Frequency Continuous-Variable Quantum Teleportation with Single Photons

This paper proposes a quantum teleportation protocol for single-photon time-frequency continuous variables that reveals a fundamental trade-off between teleportation fidelity and temporal bandwidth due to detector-position reference frame mismatches, while demonstrating applications in remote synchronization and establishing input-dependent noise thresholds grounded in a quantum theory of space-time events.

Mohamed Meguebel, Nadia Belabas, Nicolas Fabre2026-10-14