⚛️ Category

quant-ph

10537 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

Global bifurcations and basin geometry of the nonlinear non-Hermitian skin effect

This paper investigates a nonlinear Hatano-Nelson model to reveal that a global bifurcation scenario involving a subcritical Hopf bifurcation and a saddle-node of limit cycles creates a coexistence window where stable skin modes and extended states are separated by a nonlinear basin separatrix, offering a geometric framework beyond linear spectral concepts for understanding stationary states in non-Hermitian systems.

Heng Lin, Yunyao Qi, Gui-Lu Long2026-02-20
⚛️ quantum physics

States that grow linearly in time, exceptional points, and zero norm states in the simple harmonic oscillator

This paper demonstrates that the simple harmonic oscillator possesses a hidden sector of non-normalizable, linearly growing, and zero-norm states that render the Hamiltonian non-diagonalizable at exceptional points, thereby revealing that antilinear PTPT symmetry and a consistent complex-plane formulation are more fundamental to quantum theory than standard Hermiticity.

Philip D. Mannheim2026-02-20
⚛️ quantum physics

A Study of Entanglement and Ansatz Expressivity for the Transverse-Field Ising Model using Variational Quantum Eigensolver

This paper investigates the effectiveness of various variational quantum eigensolver ansatzes, including hardware-efficient and physics-inspired approaches, in simulating the transverse-field Ising model across one, two, and three dimensions by benchmarking their performance on systems up to 27 qubits using metrics such as energy variance, entanglement entropy, and spin correlations.

Ashutosh P. Tripathi, Nilmani Mathur, Vikram Tripathi2026-02-20
🔬 atomic physics

RydIQule: A Graph-based Paradigm for Modelling Rydberg and Atomic Systems

The paper introduces RydIQule, an open-source Python package that utilizes a graph-based paradigm to efficiently generate Hamiltonians and solve semi-classical Bloch equations for multi-level atomic systems, enabling rapid simulation of complex scenarios like Doppler-broadened Rydberg sensors on standard hardware.

Benjamin N. Miller, David H. Meyer, Teemu Virtanen, Christopher M. O'Brien, Kevin C. Cox2026-02-19
🔬 optics

Controlling coherence between waveguide-coupled quantum dots

This paper presents a novel split-diode waveguide design that enables independent electrical tuning of multiple quantum dots to systematically map the transition between superradiant and independent emission, revealing distinct regimes where inter-emitter coherence persists with or without rate enhancement.

D. Hallett, J. Wiercinski, L. Hallacy, S. Sheldon, R. Dost, N. Martin, A. Fenzl, I. Farrer, A. Verma, M. Cygorek, E. M. (…)2026-02-19
⚛️ lattice

Efficient Truncations of SU(NcN_c) Lattice Gauge Theory for Quantum Simulation

This paper introduces a reformulated electric basis and a local Krylov subspace truncation strategy for pure SU(NcN_c) lattice gauge theories, demonstrating that these efficient Hamiltonians remain consistent with traditional calculations at small couplings while reducing the computational resources required for quantum time evolution by 17–19 orders of magnitude.

Anthony N. Ciavarella, I. M. Burbano, Christian W. Bauer2026-02-19