⚛️ Category

quant-ph

10329 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

Weak-Value Amplification for Longitudinal Phase Measurements Approaching the Shot-Noise Limit Characterized by Allan Variance

This paper presents a quantitative evaluation of weak-value amplification for longitudinal phase measurements, demonstrating via Allan variance analysis that the technique achieves shot-noise-limited sensitivity with attosecond precision and significantly reduced variance compared to prior implementations, thereby validating its superiority over conventional methods under fixed photon numbers and technical noise.

Jing-Hui Huang, Xiang-Yun Hu2026-03-25
⚛️ quantum physics

Geometric Classification of Biased Quantum Capacity via Harmonic Translation

This paper establishes that under diagonal local phase noise, the maximal quantum error-correcting capacity is exactly characterized by classical packing bounds via a harmonic translation principle, revealing that nonlinear codes can strictly outperform affine constructions and linking biased quantum capacity to zero-error classical coding theory.

Eliseo Sarmiento Rosales, Egor Maximenko, Dionisio Manuel Tun Molina, Juan Carlos Jimenez Cervantes, Jose Alberto Guzman (…)2026-03-25
⚛️ quantum physics

Geometric Quantum Mechanics in a Symplectic Framework: Metric-Affine Extensions and Deformed Quantum Dynamics

This paper presents a geometric formulation of quantum mechanics that extends the standard Kähler framework by coupling the symplectic structure of projective Hilbert space to a metric-affine background, resulting in a mathematically consistent, deformed Hamiltonian dynamics where curvature and torsion induce specific corrections to quantum evolution and geometric phases.

Hoshang Heydari2026-03-25
⚛️ quantum physics

Probabilistic modeling over permutations using quantum computers

This paper proposes a quantum algorithm that leverages the super-exponential speedup of the Quantum Fourier Transform over the symmetric group to encode exact probabilistic models for permutation-structured data, thereby enabling spectral machine learning methods that are computationally intractable for classical computers.

Vasilis Belis, Giulio Crognaletti, Matteo Argenton, Michele Grossi, Maria Schuld2026-03-25
⚛️ quantum physics

Dicke materials as a resource for quantum squeezing

This paper proposes "Dicke materials," a class of magnetic systems exhibiting a superradiant phase transition, as a robust resource for quantum squeezing that remains stable against finite temperature, disorder, and local interactions, thereby offering a promising platform for quantum metrology and entanglement detection in solid-state systems.

Vaibhav Sharma, Shung-An Koh, Jonathan Stepp, Dasom Kim, Takumu Obata, Yuki Saito, Motoaki Bamba, Han Pu, Hanyu Zhu, Jun (…)2026-03-25
⚛️ lattice

Preparing Fermions via Classical Sampling and Linear Combinations of Unitaries

This paper presents an extension of the Evolving density matrices on Qubits (Eρ\rhoOQ) framework that overcomes the fermionic sign problem by combining classical stochastic sampling with linear combinations of unitaries, enabling efficient fault-tolerant preparation of fermionic states with O(M2)\mathcal{O}(M^2) circuit complexity and validated through simulations of the Thirring model.

Erik J. Gustafson, Henry Lamm2026-03-25
⚛️ quantum physics

Geometric Thermodynamics in Open Quantum Systems: Coherence, Curvature, and Work

This paper establishes a geometric framework for quasistatic thermodynamics in open quantum systems, demonstrating that thermodynamic work corresponds to the flux of a curvature two-form on a control manifold, where quantum coherence induces anisotropy and sign changes in this curvature, enabling geometric cancellation or reversal of work through the misalignment between the Hamiltonian and environment-selected pointer bases.

Eric R. Bittner2026-03-25