quant-ph papers | Gist.Science

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

Localizing multipartite entanglement with local and global measurements

This paper introduces and analyzes the multipartite entanglement of assistance (MEA) and localizable multipartite entanglement (LME) as measures for localizing entanglement via global and local measurements, respectively, establishing computable bounds, investigating typical behaviors in random states, deriving criteria for graph state transformations, and demonstrating applications in certifying protocol optimality and detecting phase transitions in quantum many-body systems.

Christopher Vairogs, Samihr Hermes, Felix Leditzky2026-02-25

⚛️ quantum physics

A general recursion for integrals involving products of Hermite polynomials and its applications

This paper derives a numerically stable, factorial-free recursive formula for integrals of products of $N$ Hermite polynomials using integration by parts, providing an efficient framework for high-precision calculations in ab initio few-body simulations under 1D harmonic confinement.

Tran Duong Anh-Tai, Phan Quang Son, Le Minh Khang, Nguyen Duy Vy, Vinh N. T. Pham2026-02-25

⚛️ quantum physics

Entanglement, separability and correlation topology of quantum systems over parametric space of interaction potential

This paper challenges the traditional dichotomy between entangled and separable quantum states by demonstrating that both arise from a single interaction potential governed by specific parameters, revealing topological constraints on state transitions that necessitate energy conservation violations or ancillary systems to bypass separable intermediates, thereby offering new methods for qubit manipulation and a fundamental re-evaluation of quantum paradoxes.

Basudev Nag Chowdhury2026-02-25

⚛️ quantum physics

Increasing the distance of topological codes with time vortex defects

This paper proposes a method to enhance topological quantum error-correcting codes by introducing "time vortex" defects that reduce the physical qubit overhead by more than half while maintaining or improving logical error rates, as demonstrated through optimization of the Floquet color code and Monte Carlo simulations.

Gilad Kishony, Erez Berg2026-02-25

⚛️ quantum physics

A Useful Metric for the NISQ Era: Qubit Error Probability and Its Role in Zero Noise Extrapolation

This paper introduces the qubit error probability (QEP) as a comprehensive, pre-execution device metric and demonstrates that using it to guide zero noise extrapolation significantly suppresses observable errors in large-scale NISQ simulations on IBM Quantum Heron processors, offering a resource-efficient path to reliability without full quantum error correction.

Nahual Sobrino, Unai Aseginolaza, Joaquim Jornet-Somoza, Juan Borge2026-02-25

⚛️ quantum physics

Improving the efficiency of quantum annealing with controlled diagonal catalysts

This paper proposes a method to improve quantum annealing efficiency for problems with small energy gaps by introducing controlled diagonal catalysts that exploit diabatic transitions, achieving an approximate quadratic speedup in the exponential scaling exponent of the time to solution.

Tomohiro Hattori, Shu Tanaka2026-02-25

⚛️ quantum physics

Quantum Incompatibility in Parallel vs Antiparallel Spins

This paper demonstrates that antiparallel spin-1/2 pairs uniquely enable the exact simultaneous prediction of three mutually orthogonal spin components and facilitate enhanced joint measurability, offering significant advantages over parallel configurations for quantum retrodiction, cryptography, and device estimation.

Ram Krishna Patra, Kunika Agarwal, Biswajit Paul, Snehasish Roy Chowdhury, Sahil Gopalkrishna Naik, Manik Banik2026-02-25

🔢 mathematics

Distance-based measures and Epsilon-measures for measurement-based quantum resources

This paper investigates the quantification of measurement-based quantum resources by developing distance-based measures and analyzing the mathematical properties and operational connections of $\epsilon$ -measures, providing a robust framework applicable to both individual and sets of measurements in scenarios with partial information.

Arindam Mitra, Sumit Mukherjee, Changhyoup Lee2026-02-25

⚛️ quantum physics

Feedback-driven recurrent quantum neural network universality

This paper establishes the theoretical universality of feedback-driven recurrent quantum neural networks, demonstrating that they can approximate regular state-space systems with high accuracy using only a logarithmic number of qubits and linear readouts, thereby offering a practical and scalable solution for real-time quantum reservoir computing.

Lukas Gonon, Rodrigo Martínez-Peña, Juan-Pablo Ortega2026-02-25

🔢 mathematics

Stability of thermal equilibrium in long-range quantum systems

This paper demonstrates that the stability of local observables in long-range quantum systems at thermal equilibrium is guaranteed by correlation decay and Lieb-Robinson bounds at high temperatures, with numerical evidence suggesting this robustness extends to broader interaction regimes, thereby supporting the reliability of analog quantum simulators.

Tim Möbus, Jorge Sánchez-Segovia, Álvaro M. Alhambra, Ángela Capel2026-02-25

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