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

Higher-Order Programs with Indefinite Causal Orders: a Linear Approach to Coherent Control of Quantum Processes

This paper introduces a higher-order linear quantum functional language equipped with a causally disciplined type system and operational semantics that faithfully captures the full computational power of indefinite causal orders, including coherent control over general quantum channels and measurements, while ensuring physical validity and supporting future extensions to recursion.

Kathleen Barsse, Romain Péchoux, Simon Perdrix2026-07-13

⚛️ quantum physics

Quantum Orchestras: a Concrete Semantics for Recursive Hybrid Programs

This paper introduces the "quantum orchestra monad," a denotational semantics based on quantum instruments and DCPOs, to formally model recursive hybrid quantum programs that feature mid-circuit measurements, non-termination, and qubit references.

Alex Rice, Dominik Leichtle, Kim Worrall, Robert I. Booth2026-07-13

⚛️ quantum physics

Fluctuation theorems for thermally isolated driven quantum systems: nonadiabaticity, excess work and strong inequalities

This paper extends C. Jarzynski's work on thermodynamic inequalities to thermally isolated driven quantum systems by deriving detailed and integral fluctuation theorems that physically interpret stochastic quantities as nonadiabaticity and excess work, thereby establishing stronger inequalities related to irreversibility and the Second Law.

J. V. M. Steimetz, M. Campisi, M. V. S. Bonança2026-07-13

🔢 mathematics

A complete ultrametric on von Neumann's incomplete tensor products

This paper introduces a complete ultrametric structure on the set of von Neumann's incomplete tensor products to rigorously quantify the operational distinctness of quantum branches, demonstrating how product unitaries displace these states and interpreting the metric as a decoherence exponent that measures the rate at which universal state branches become distinguishable.

Andrew Lesniewski2026-07-13

⚛️ quantum physics

Lean-QIT: Towards a Formal Infrastructure for Quantum Information Theory

This paper introduces Lean-QIT, a Lean 4 library that establishes a formal, machine-checked infrastructure for finite-dimensional quantum information theory by providing composable interfaces for operational definitions and successfully formalizing key coding theorems such as Schumacher's source coding and the Holevo-Schumacher-Westmoreland capacity theorems.

Chengkai Zhu, Ziao Tang, Guocheng Zhen, Yimeng Cao, Yusheng Zhao, Ranyiliu Chen, Xuanqiang Zhao, Lei Zhang, Xin Wang2026-07-13

🔬 mesoscale physics

Complete measurement of tunnel- and valley-coupling parameters in a silicon double quantum dot

This paper presents a complete characterization of intravalley and intervalley tunnel couplings, including their complex valley phases, in a silicon double quantum dot, demonstrating how these phases govern measurable energy gaps and fill a critical gap in understanding sample-wide variations of key physical parameters like spin-orbit coupling and valley-orbit mixing.

Daniel J. King, Minyoung Kim, J. Reily, Jonathan C. Marcks, Mark Friesen, Benjamin D. Woods, M. A. Eriksson2026-07-13

⚛️ quantum physics

Quantum Frames of Reference and the Noncommutative Values of Observables

This paper analyzes how quantum reference frame transformations, which account for the fluctuations and entanglement of the reference frame itself, alter the values of observables for a fixed state, successfully utilizing the concept of noncommutative values to describe these changes in both continuous and discrete quantum systems.

Otto C. W. Kong2026-07-10

⚛️ quantum physics

Mixed State Parametrization and Two-qubit Entanglement

This paper introduces a generic mixed-state parametrization scheme that leverages the interplay between pure-state vectors and density matrices to analyze two-qubit entanglement, providing explicit results for negativity and concurrence in specific cases where one of the fifteen system parameters is zero.

Otto C. W. Kong, Hock King Ting2026-07-10

🔬 mesoscale physics

Quantum phase transition in magnetic nanographenes on a lead superconductor

This study demonstrates that atomically precise magnetic nanographenes on a lead superconductor exhibit a tunable quantum phase transition between singlet and doublet states, driven by the interplay between delocalized graphene spins and Cooper pairs, thereby offering a promising platform for exploring Majorana bound states and other low-dimensional quantum phenomena.

Yu Liu, Can Li, Fu-Hua Xue, Ying Wang, Haili Huang, Hao Yang, Jiayi Chen, Dan-Dan Guan, Yao-Yi Li, Hao Zheng, Canhua Liu (…)2026-07-10

⚛️ quantum physics

Quantum Origin of (Newtonian) Mass and Galilean Relativity Symmetry

This paper presents a revised group-theoretical formulation of quantum mechanics that redefines the Galilei group's role by identifying Newtonian mass as a Casimir invariant, establishing a symmetry-dictated center of mass, and necessitating the exclusion of time translational symmetry to allow for particle interactions.

Otto C. W. Kong2026-07-10

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