Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Blind-spots of Randomized Benchmarking Under Temporal Correlations
Varun Srivastava, Abhinash Kumar Roy, Soumik Mahanti +3 more·Oct 15, 2025
Randomized benchmarking (RB) is a widely adopted protocol for estimating the average gate fidelity in quantum hardware. However, its standard formulation relies on the assumption of temporally uncorrelated noise, an assumption often violated in curre...
Multivariate Time Series Forecasting with Gate-Based Quantum Reservoir Computing on NISQ Hardware
Wissal Hamhoum, S. Cherkaoui, J. Laprade +2 more·Oct 15, 2025
Quantum reservoir computing (QRC) offers a hardware-friendly approach to temporal learning, yet most studies target univariate signals and overlook near-term hardware constraints. This work introduces a gate-based QRC for multivariate time series (MT...
Entanglement spectrum of gapless topological phases: a case study with topological superconductors
Archi Banerjee, Meng Zeng·Oct 14, 2025
Using bulk gapless topological superconductors in both 1d and 2d as free fermion model examples, we demonstrate the power of subsystem correlation spectrum (the spectrum of correlation matrix), or equivalently the entanglement spectrum for the case o...
Simulation-Free Fidelity Estimation via Quantum Output Order Statistics
Tobias Micklitz·Oct 14, 2025
We introduce a simulation-free method to estimate the fidelity of large quantum circuits based on the order statistics of measured output probabilities from highly entangled, chaotic states. The approach requires only the highest-probability output b...
The Infra-Red Road to Quantum Gravity
Samin Tajik, Michael. j. Desrochers, Philip C. E. Stamp·Oct 14, 2025
We review work in areas ranging from condensed matter physics to quantum gravity, with the following interconnected questions in mind: (i) what is the nature of the vacuum in condensed matter systems, in quantum field theory, and in classical and qua...
Quantum Key Distribution in the Iberian Peninsula
Vicky Domínguez Tubío, Mario Badás Aldecocea, David L. Bakker +3 more·Oct 14, 2025
A promising use of quantum networking is quantum key distribution (QKD), which can provide information-theoretic security unattainable by classical means. While optical fiber-based QKD networks suffer from exponential loss, satellite-assisted quantum...
Probing non-Markovian qubit noise and modeling Post Markovian Master Equation
Chun-Tse Li, Jingming Tan, Vasil Gucev +1 more·Oct 14, 2025
Understanding the noise characteristics of quantum processors is crucial when achieving fault-tolerant quantum computing. However, typical qubit designs are often studied under the Markovian approximation, which does not fully capture realistic dynam...
Many-body post-processing of density functional calculations using the variational quantum eigensolver for Bader charge analysis
Erik Schultheis, Alexander Rehn, Gabriel Breuil·Oct 14, 2025
Quantum chemistry and condensed matter physics are among the most promising applications of quantum computers. Further, estimating properties of a material is crucial to evaluate its industrial applications. To investigate charge distributions of wea...
Can outcome communication explain Bell nonlocality?
Carlos Vieira, Carlos de Gois, Pedro Lauand +3 more·Oct 14, 2025
A central aspect of quantum information is that correlations between spacelike separated observers sharing entangled states cannot be reproduced by local hidden variable (LHV) models, a phenomenon known as Bell nonlocality. If one wishes to explain s...
Statistical phase-space complexity of continuous-variable quantum channels
Siting Tang, Francesco Albarelli, Yue Zhang +2 more·Oct 14, 2025
The statistical complexity of continuous-variable quantum states can be characterized with a quantifier defined in terms of information-theoretic quantities derived from the Husimi Q-function. In this work, we utilize this complexity quantifier of qu...
Tunable quantum Mpemba effect in long-range interacting systems
Andrew Hallam, Matthew Yusuf, Aashish A. Clerk +2 more·Oct 14, 2025
Symmetry plays a fundamental role in many-body systems, both in and out of equilibrium. The quantum Mpemba effect (QME) - a phenomenon where systems initially farther from equilibrium can thermalize faster - can be understood in terms of how rapidly ...
Censorship of quantum resources against catalytic account sharing
Julien Pinske, Klaus Mølmer·Oct 14, 2025
In quantum censorship, an agency oversees quantum communication in a public-domain network. The agency restricts the users communication to the free states of a quantum resource theory (QRT). Despite quantum correlations being fragile, any realistic ...
Prethermal gauge structure and surface growth in $\mathbb{Z}_2$ lattice gauge theories
Lukas Homeier, Andrea Pizzi, Hongzheng Zhao +3 more·Oct 14, 2025
Universal aspects of thermalization in interacting many-body systems are challenging to derive microscopically, especially in kinetically constrained models, yet their numerical study beyond $(1+1)$D remains notoriously difficult. Here, we numericall...
Thermodynamics of quantum processes: An operational framework for free energy and reversible athermality
Himanshu Badhani, Dhanuja G. S., Siddhartha Das·Oct 14, 2025
We explore the thermodynamics of quantum processes (quantum channels) by axiomatically introducing the free energy for channels, defined via the quantum relative entropy with an absolutely thermal channel whose fixed output is in equilibrium with a t...
Quantum Generative Modeling of Single-Cell transcriptomes: Capturing Gene-Gene and Cell-Cell Interactions
Selim Romero, Vignesh S. Kumar, Robert S. Chapkin +1 more·Oct 14, 2025
Single-cell RNA sequencing (scRNA-seq) data simulation is limited by classical methods that rely on linear correlations, failing to capture the intrinsic, nonlinear dependencies. No existing simulator jointly models gene-gene and cell-cell interactio...
Performance of Gaussian Boson Sampling on Planted Bipartite Clique Detection
Yu-Zhen Janice Chen, Laurent Massoulié, Don Towsley·Oct 14, 2025
We investigate whether Gaussian Boson Sampling (GBS) can provide a computational advantage for solving the planted biclique problem, which is a graph problem widely believed to be classically hard when the planted structure is small. Although GBS has...
Trajectory-Protected Quantum Computing
Barbara Šoda, Pierre-Antoine Graham, T. Rick Perche +1 more·Oct 14, 2025
We introduce a novel method that simultaneously isolates a quantum computer from decoherence and enables the controlled implementation of computational gates. We demonstrate a quantum computing model that utilizes a qubit's motion to protect it from ...
Contextuality-based quantum key distribution with deterministic single-photon sources
Yu Meng, Debashis Saha, Mikkel Thorbjørn Mikkelsen +7 more·Oct 14, 2025
Photons are central to quantum technologies, with photonic qubits offering a promising platform for quantum communication. Semiconductor quantum dots stand out for their ability to generate single photons on demand, a key capability for enabling long...
Measurement-induced entanglement in noisy 2D random Clifford circuits
Zhi-Yuan Wei, Jon Nelson, Joel Rajakumar +4 more·Oct 14, 2025
We study measurement-induced entanglement generated by column-by-column sampling of noisy 2D random Clifford circuits of size $N$ and depth $T$. Focusing on the operator entanglement $S_{\rm op}$ of the sampling-induced boundary state, first, we repr...
Time-dependent Variational Principles for Hybrid Non-Unitary Dynamics: Application to Driven-Dissipative Superconductors
Pasquale Filice, Marco Schirò, Giacomo Mazza·Oct 14, 2025
We introduce time-dependent variational principles to study the non-unitary dynamics of open quantum many-body systems, including dynamics described by the full Lindblad master equation, the non-Hermitian dynamics corresponding to the no-click limit ...