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

Derivatives of Quantum Randomness: Separating Pseudorandom Unitaries from Pseudorandom (Function-like) States

This paper establishes a fundamental unitary oracle separation between pseudorandom function-like state generators (PRFSGs) and pseudorandom unitaries (PRUs) by demonstrating that even the strongest state-based pseudorandomness does not imply unitary pseudorandomness, a result proven by analyzing the inherently low-rank derivatives of the map from oracle states to implemented unitaries.

Minki Hhan2026-09-15

🔬 mesoscale physics

Quantum register based on double quantum dots in semiconductor nanowires

This paper proposes a scalable, universal solid-state quantum register implemented using double quantum dots in semiconductor nanowires, where qubits encoded in electron space states with a fixed 0.5 filling factor enable linear dynamics and universal logic gates via Coulomb interactions, all controlled by digital voltage pulses similar to integrated circuits.

Vladimir Vyurkov, Leonid Fedichkin, Igor Semenikhin, Denis Drozhzhin, Konstantin Rudenko, Vladimir Lukichev2026-09-15

⚛️ quantum physics

When is global evolutionary search useful for variational quantum algorithms? A landscape-first study

This study demonstrates that global evolutionary search outperforms multistart local optimization in variational quantum algorithms primarily when specific mechanisms like parameter reuse and cost-term competition trap local search in inferior basins, a condition that can be reliably predicted by a pre-benchmark landscape score.

Vojtěch Novák, Ivan Zelinka2026-09-15

🔬 condensed matter

Surrogate-assisted three-dimensional Gross--Pitaevskii characterization of Bose--Einstein condensate transport on an atom chip

This paper presents a surrogate-assisted workflow that efficiently screens current schedules for millimeter-scale Bose-Einstein condensate transport on an atom chip using low-cost models, subsequently validating top candidates with high-fidelity three-dimensional Gross-Pitaevskii simulations to achieve near-perfect transport fidelity.

Naoki Shibuya2026-09-15

⚛️ quantum physics

Controlling quantum state transfer in rooted products

This paper establishes that rooted products of graphs can facilitate quantum state transfer by proving a transference principle where a graph with state transfer combined with a controllable graph inherits this property, while also enabling the construction of efficient high-fidelity state transfer even when the base graph lacks it.

Addison Ballif, Christino Tamon, Gabriel Tucker2026-09-15

🌀 nonlinear sciences

A Nonrecursive Lindblad Quantization of Dissipative Polynomial Dynamics

This paper introduces a direct, nonrecursive algebraic method to map arbitrary planar polynomial dissipative flows into open quantum systems in Lindblad form, enabling the design of quantum models that reproduce specific classical dynamical structures and relaxation spectra in the semiclassical limit.

Tingfei Li2026-09-15

⚛️ quantum physics

Exact computation of quantum wave functions for nonlinear potentials

This paper presents a method for the exact computation of quantum wave functions in nonlinear potentials by utilizing a harmonic coordinate transformation and time scaling to map the system onto a solvable linear oscillator, thereby deriving exact solutions from classical action and density without relying on perturbation theory.

Winfried Loghmiller, Jean-Jacques Slotine2026-09-15

⚛️ quantum physics

From breakfast, lunch, and dinner to the Bell-inequality tetrahedron

This paper presents a pedagogical visualization of Bell inequalities using a "twin" analogy for entangled particles, demonstrating how the space of local models forms a tetrahedron within the quantum elliptope and the broader no-signalling cube in the space of mixed moments.

Francesco Giacosa2026-09-15

🔬 mesoscale physics

Quantum Hall Ferromagnetism in a Cavity Vacuum

This paper demonstrates that vacuum fluctuations in a cavity can drive a continuous phase transition in a quantum Hall ferromagnet at filling factor $\nu=1$ , destabilizing the uniform state to form novel "compact-core phases" characterized by inhomogeneous electron density and entanglement, with the transition order parameter directly probed by photon number.

Ceren B. Dag, Luis Brey, Ganpathy Murthy, H. A. Fertig2026-09-15

⚛️ quantum physics

Certification cost of quantum models: measurement correlation, not parameter count

This paper demonstrates that the measurement cost for certifying variational quantum models scales with the correlation structure of readout noise rather than the parameter count, revealing that cubic cost estimates from small simulations often overestimate large-scale hardware requirements due to finite-size effects and connectivity constraints.

Pavel Sulimov, Claude Lehmann2026-09-15

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