⚛️ Category

quant-ph

9165 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

Quantum Bayesian Networks Can Speed up Reinforcement Learning in Partially Observable Environments

This paper introduces Quantum Bayesian Reinforcement Learning (QBRL), a hybrid quantum-classical algorithm that achieves sub-quadratic speedups in planning for partially observable environments with sparse dynamics by leveraging quantum rejection sampling for belief updates, while demonstrating that such advantages do not extend to fully observable settings or networks with high in-degree.

Gilberto Cunha, Alexandra Ramôa, André Sequeira, Michael de Oliveira, Luís Barbosa2026-07-01
🔬 physics

Quantum modeling of radical pair magnetic sensor based on electric dipole moment

This study employs quantum mechanical modeling to demonstrate that the spin dynamics of radical pairs in cryptochrome proteins, driven by blue light absorption, generate a magnetic-field-dependent electric dipole moment that likely serves as the biosignal for avian geomagnetic navigation.

Mahboobe Sehati, Ali Soltanmanesh, Shabnam Abutalebi, Abolfazl Bahrampour, Naser Haeri, Sareh Rostami, Alireza Bahrampou (…)2026-07-01
⚛️ quantum physics

Experimental demonstration of non-local magic in a superconducting quantum processor

This paper presents the first experimental demonstration of non-local magic on a superconducting quantum processor, validating its theoretical definition through two independent measurement routes, characterizing dominant noise sources via a parameter-free model, and establishing it as a novel hardware benchmark for quantum advantage.

Halima Giovanna Ahmad, Gianluca Esposito, Viviana Stasino, Jovan Odavic, Carlo Cosenza, Alessandro Sarno, Pasquale Mastr (…)2026-07-01
⚛️ quantum physics

A Quantum Algorithm with Polylogarithmic Depth per Trotter Step for the Extended Hubbard Model

The paper introduces Q2FMM, a quantum algorithm inspired by the fast multipole method that achieves polylogarithmic circuit depth per Trotter step for simulating the extended Hubbard model by hierarchically grouping long-range interactions and efficiently reusing multipole expansions through reversible uncomputing.

Yu Wang, Martina Nibbi, Maxine Luo, Isabel Nha Minh Le, Yanbin Chen, J. Ignacio Cirac, Christian B. Mendl2026-07-01
⚛️ quantum physics

Dynamical irreversibility and local decoherence in quantum many-body chaos

This paper introduces the "Choi echo" protocol to analyze single-spin decoherence in quantum many-body systems, revealing that average local relaxation can mimic chaotic scrambling in integrable systems due to coherent transport, thereby demonstrating that local decoherence does not uniquely signify spectral chaos.

Jose Alfredo de Leon, Miguel Gonzalez, Carlos Diaz-Mejia2026-07-01✓ Author reviewed ⓘ
🌀 nonlinear sciences

Correlated many-body quantum dynamics of the Peregrine soliton

This paper investigates the correlated many-body quantum dynamics of the Peregrine soliton in an ultracold bosonic gas, revealing how interaction quenches from repulsive to attractive couplings generate a multi-orbital rogue wave that exhibits significant deviations from mean-field predictions, including reduced peak amplitude, altered coherence properties, and tunable transitions to Kuznetsov-Ma breathers.

D. Diplaris, G. A. Bougas, P. G. Kevrekidis, C. -L. Hung, P. Schmelcher, S. I. Mistakidis2026-07-01
⚛️ quantum physics

Replica Keldysh field theory of quantum-jump processes: General formalism and application to imbalanced and inefficient fermion counting

This paper develops a comprehensive replica Keldysh field theory to unify the description of measurement-induced phase transitions in both efficient and inefficient quantum-jump processes, demonstrating through analytical and numerical studies of imbalanced fermion counting that inefficient detection introduces a finite correlation length leading to distinct area-law and volume-law scaling behaviors in entanglement and subsystem entropy.

Felix Kloiber-Tollinger, Lukas M. Sieberer2026-07-01