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.

Finite-Precision Quantum Mechanics

This paper introduces Interval Quantum Mechanics (IQM), a finite-precision framework that replaces idealized point states with "quantum parcels" (open sets of density matrices) to resolve foundational paradoxes like the von Neumann entropy dilemma and wave-particle duality by treating quantum states as epistemic geometric objects that evolve deterministically and refine through measurement, while recovering standard quantum predictions in the infinite-precision limit.

Abbas Edalat2026-05-20🔢 math-ph

High-fidelity molecular quantum logic gates resilient to interaction fluctuation

This paper proposes a high-fidelity, tunable controlled-phase gate for optically trapped polar molecules that achieves resilience against dipole-dipole interaction fluctuations by utilizing global microwave pulses and single-qubit gates without populating coupled states, enabling fidelities exceeding 0.9999 under typical experimental conditions.

Yan Lu, Xiao-Feng Shi2026-05-20🔬 physics.atom-ph

Capacity of multimode quantum Gaussian channels

This paper derives explicit formulas for the capacity of multimode quantum Gaussian channels, demonstrating that increasing the number of modes is always optimal under fixed power constraints and providing analytical results for ensemble-averaged Holevo capacities under random passive transformations, homodyne, and heterodyne detection.

Maria Popławska, Marcin Jarzyna2026-05-20⚛️ quant-ph

Non-Markovianity in the Adapted Caldeira-Leggett model

This paper characterizes the non-Markovian features of the Adapted Caldeira-Leggett model by analyzing information backflow and system-environment correlations, demonstrating that while coupling strength primarily drives correlation buildup, temperature significantly influences environmental state changes, thereby validating the model as a reliable tool for exploring microscopic quantum phenomena.

Luciano Manara, Andrea Smirne, Bassano Vacchini2026-05-20⚛️ quant-ph

Quantum master equation approach for the multiphonon up-pumping model

This paper proposes a fully quantum multiphonon up-pumping model based on a derived quantum master equation to elucidate how shocked phonon environments drive coherent energy transfer from low-frequency doorway modes to high-frequency molecular vibrations in energetic materials.

Jiong Cheng, Yanqiang Yang, Wenlin Li, Xun Li2026-05-20⚛️ quant-ph

Off-line quantum-advantage feature extraction for industrial production

This paper introduces "quantum feature surrogates," a framework by Kipu Quantum that enables cost-effective industrial quantum advantage by using quantum processors to learn feature representations from a small data subsample and training classical models to apply these insights to large-scale datasets, thereby eliminating the need for per-sample quantum execution.

Carlos Flores-Garrigos, Gabriel D. Alvarado Barrios, Qi Zhang, Anton Simen, Enrique Solano2026-05-20⚛️ quant-ph

Geometric curvature driven by many-body collective fluctuations

This paper extends the understanding of quantum geometry beyond single-particle band structures by demonstrating that many-body collective fluctuations dynamically dress the Berry curvature, creating experimentally distinguishable signatures in inelastic scattering spectra through non-commutative transverse fluctuations and non-local-time interactions.

Alejandro S. Miñarro, Gervasi Herranz2026-05-20🔬 cond-mat

Detrimental Agnostic Entanglement: The Case Against Hardware-Efficient Ansätze for Combinatorial Optimization

This paper demonstrates that for combinatorial optimization problems governed by diagonal Hamiltonians, such as MaxCut, hardware-efficient variational quantum algorithms suffer from "detrimental agnostic entanglement" and are outperformed by fully separable circuits, indicating that problem-structured designs like QAOA are superior because they leverage entanglement derived from the problem's specific structure rather than arbitrary entanglement.

Tobias Rohe, Markus Baumann, Federico Harjes Ruiloba, Philipp Altmann, Gerhard Stenzel, Claudia Linnhoff-Popien2026-05-20⚛️ quant-ph

Induced transitions in non-Hermitian spin-boson models with time-dependent boundaries

This paper demonstrates that time-dependent boundaries in a non-Hermitian spin-boson model, mapped to a Hermitian system via a squeezing transformation, can induce and control transitions between bosonic sectors through the coherent interference of varying non-Hermitian parameters.

Andreas Fring, Marta Reboiro2026-05-20🔢 math-ph

On Performance and Limitations of NISQ Hardware for Simulations of Quantum Wave Packet Dynamics

This paper presents a grid-based digital quantum simulation method for one-dimensional wave packet dynamics that reduces operator scaling to O(2^n) and demonstrates that while small-scale implementations on IBM and IonQ hardware qualitatively reproduce benchmarked dynamics, IonQ maintains higher accuracy than IBM as the qubit count increases.

Tamila Kuanysheva, Jonathan Andrade-Plascencia, Jayakrushna Sahoo, Brian Kendrick, Dmitri Babikov2026-05-20⚛️ quant-ph

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