⚛️ 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

Floquet Quasienergy-Resolved Dissipation, Dynamics, and Spectroscopy in Ultrastrong Cavity-QED

This paper introduces a nonsecular Floquet generalized master equation framework for ultrastrong-coupling cavity-QED systems under strong periodic driving, demonstrating that dissipation is intrinsically governed by Floquet quasienergies rather than static dressed resonances and establishing a superior theory for accurately predicting spectra, controlling decay pathways, and engineering nonequilibrium quantum states where conventional static approaches fail.

Kamran Akbari, Franco Nori, Stephen Hughes2026-07-01
🔬 physics

Radical-Fragment Many-Body Expansion for Linear Alkane Quantum Chemistry

This paper introduces a radical-fragment many-body expansion (MBE2) that utilizes homolytic bond cleavage and restricted open-shell Hartree-Fock to reconstruct linear alkane energies from just four unique fragment calculations, achieving significant qubit reductions and demonstrating the viability of fragmentation-based quantum chemistry for scaling quantum solvers to large molecular systems.

Daniel Sierra-Sosa, Jorge Saavedra, Santiago Solares, Gregorio Toscano-Pulido2026-07-01
⚛️ quantum physics

Energetics of non-Gaussianity in single mode cavities

This paper introduces an energetic framework for characterizing non-Gaussianity in single-mode bosonic states by decomposing total energy into Gaussian and non-Gaussian contributions, establishing the latter as a valid measure for pure states and a faithful witness for mixed states while revealing its close relationship with Wigner negativity.

Sahil Sardar Jafar, Kian Hwee Lim, Kiarn T. Laverick, Samyak P. Prasad, Maria Maffei, Alexia Auffèves2026-07-01✓ Author reviewed ⓘ
🔬 materials science

Atom diffraction in the strong-coupling regime

This paper demonstrates that kiloelectronvolt helium diffraction through freestanding single-layer graphene enters a strong-coupling regime where lattice distortions cause significant phase spreads that cannot be described by the traditional perturbative Debye-Waller factor, a phenomenon distinct from the weak-coupling behavior observed in atomic hydrogen diffraction.

Carina Kanitz, Jakob Bühler, François Aguillon, Vladimír Zobač, Jaime Glerum, Toma Susi, Maxime Debiossac, Philippe Ronc (…)2026-07-01
⚛️ quantum physics

Pauli Weight Hamiltonian Term Selection for Optimized Machine Learning Based Quantum Error Mitigation

This paper introduces Pi-QEM, a machine learning-based quantum error mitigation framework that systematically selects training observables based on Pauli weights to efficiently reduce ground-state energy estimation errors using only a small subset of dominant, low-weight Pauli strings.

Fadhil Fatih Shiddiq, Darell Timothy Tarigan, Hadyan Luthfan Prihadi, Jusak S. Kosasih, Yanoar P. Sarwono, Leong-Chuan K (…)2026-07-01
🔢 mathematics

Cumulant-based quantum relative Rényi functional

This paper introduces a new cumulant-based quantum relative Rényi functional derived from the cumulant-generating function of the quantum relative surprisal operator, establishing its fundamental properties and demonstrating that a regularized version of this functional vanishes if and only if quantum states commute, thereby offering a novel characterization of non-commutativity and a conjectured monotonicity under commutativity-preserving channels.

Atirat Meunson, Tanapat Deesuwan2026-07-01
⚛️ quantum physics

Absorption capacity of separable noise: Bell-mixing thresholds on separability and teleportation

This paper introduces and derives closed-form expressions for the entanglement and fidelity absorption capacities of separable noise states, which quantify the maximum amount of Bell reference a noise state can tolerate before losing entanglement or teleportation advantage, by mapping these thresholds through a unified Möbius transformation for various noise configurations and dynamical evolutions.

Xuan Du Trinh2026-07-01
⚛️ quantum physics

A Quantum-Classical Surrogate Model for the Collision Operator of the Lattice Boltzmann Method

This paper introduces a hybrid quantum-classical surrogate model that utilizes parameterized quantum circuits to accurately approximate the non-linear BGK collision operator of the Lattice Boltzmann Method across the full range of relaxation parameters, demonstrating high accuracy and generalizability in benchmark fluid dynamics simulations.

Lukas C. Birk, David M. Wawrzyniak, Josef M. Winter, Steffen J. Schmidt, Thomas Indinger, Christian F. Janßen, Nikolaus (…)2026-07-01
⚛️ quantum physics

Programmable optical parametric amplifier synthesizer for cubic phase states and amplified Schrodinger cat states

This paper introduces a programmable optical parametric amplifier synthesizer that, under a heralded photon-number-resolving framework, generates high-fidelity cubic phase states and amplifies Schrödinger cat states by exploiting distinct catalytic and non-catalytic configurations to achieve fidelity exceeding 0.99 with experimentally accessible moderate-gain operations.

Yusuf Turek, Ming-Yan Sun, Xiao-Xi Yao2026-07-01