Quantum

Paper

Quantum Architecture Search with Unsupervised Representation Learning

Yize Sun, Zixin Wu, Volker Tresp, and Yunpu Ma,

Quantum 10, 1994 (2026).

Unsupervised representation learning presents new opportunities for advancing Quantum Architecture Search (QAS) on Noisy Intermediate-Scale Quantum (NISQ) devices. QAS is designed to optimiz…

Paper

Parameter estimation for quantum jump unraveling

Marco Radaelli, Joseph A. Smiga, Gabriel T. Landi, and Felix C. Binder,

Quantum 10, 1993 (2026).

We consider the estimation of parameters encoded in the measurement record of a continuously monitored quantum system in the jump unraveling, corresponding to a single-shot scenario, where i…

Paper

Scalable quantum simulator with an extended gate set in giant atoms

Guangze Chen and Anton Frisk Kockum,

Quantum 10, 1992 (2026).

Quantum computation and quantum simulation require a versatile gate set to optimize circuit compilation for practical applications. However, existing platforms are often limited to specific…

Paper

QMetro++ – Python optimization package for large scale quantum metrology with customized strategy structures

Piotr Dulian, Stanisław Kurdziałek, and Rafał Demkowicz-Dobrzański,

Quantum 10, 1991 (2026).

QMetro++ is a Python package that provides a set of tools for identifying optimal estimation protocols that maximize quantum Fisher information (QFI). Optimization can be performed for arbit…

Paper

Multi-qubit Rydberg gates between distant atoms

Antonis Delakouras, Georgios Doultsinos, and David Petrosyan,

Quantum 10, 1990 (2026).

We propose an efficient protocol to realize multi-qubit gates in arrays of neutral atoms. The atoms encode qubits in the long-lived hyperfine sublevels of the ground electronic state. To rea…

Paper

NPA Hierarchy for Quantum Isomorphism and Homomorphism Indistinguishability

Prem Nigam Kar, David E. Roberson, Tim Seppelt, and Peter Zeman,

Quantum 10, 1989 (2026).

Mančinska and Roberson [FOCS'20] showed that two graphs are quantum isomorphic if and only if they admit the same number of homomorphisms from any planar graph. Atserias et al. [JCTB'19] pro…

Paper

Characterising memory in quantum channel discrimination via constrained separability problems

Ties-Albrecht Ohst, Shijun Zhang, Hai Chau Nguyen, Martin Plávala, and Marco Túlio Quintino,

Quantum 10, 1988 (2026).

Quantum memories are a crucial precondition in many protocols for processing quantum information. A fundamental problem that illustrates this statement is given by the task of channel discri…

Paper

A Computational Tsirelson’s Theorem for the Value of Compiled XOR Games

David Cui, Giulio Malavolta, Arthur Mehta, Anand Natarajan, Connor Paddock, Simon Schmidt, Michael Walter, and Tina Zhang,

Quantum 10, 1987 (2026).

Nonlocal games are a foundational tool for understanding entanglement and constructing quantum protocols in settings with multiple spatially separated quantum devices. In this work, we conti…

Paper

Fast-forwarding quantum algorithms for linear dissipative differential equations

Dong An, Akwum Onwunta, and Gengzhi Yang,

Quantum 10, 1986 (2026).

We establish improved complexity estimates of quantum algorithms for linear dissipative ordinary differential equations (ODEs) and show that the time dependence can be fast-forwarded to be s…

Paper

Quantum particle in the wrong box (or: the perils of finite-dimensional approximations)

Felix Fischer, Daniel Burgarth, and Davide Lonigro,

Quantum 10, 1985 (2026).

When numerically simulating the unitary time evolution of an infinite-dimensional quantum system, one is usually led to treat the Hamiltonian $H$ as an "infinite-dimensional matrix" by express…

Paper

A Multilevel Framework for Partitioning Quantum Circuits

Felix Burt, Kuan-Cheng Chen, and Kin K. Leung,

Quantum 10, 1984 (2026).

Executing quantum algorithms over distributed quantum systems requires quantum circuits to be divided into sub-circuits which communicate via entanglement-based teleportation. Naively mappin…

Paper

Dissipation and non-thermal states in cryogenic cavities

Zeno Bacciconi, Giulia Piccitto, Alessandro Maria Verga, Giuseppe Falci, Elisabetta Paladino, and Giuliano Chiriacò,

Quantum 10, 1983 (2026).

We study the properties of photons in a cryogenic cavity, made by cryo-cooled mirrors surrounded by a room temperature environment. We model such a system as a multimode cavity coupled to tw…

Paper

Recurrence in discrete-time quantum stochastic walks

Martin Štefaňák, Václav Potoček, İskender Yalçınkaya, Aurél Gábris, and Igor Jex,

Quantum 10, 1982 (2026).

Interplay between quantum interference and classical randomness can enhance performance of various quantum information tasks. In the present paper we analyze recurrence phenomena in the disc…

Paper

Gibbs Sampling gives Quantum Advantage at Constant Temperatures with O(1)-Local Hamiltonians

Joel Rajakumar and James D. Watson,

Quantum 10, 1981 (2026).

Sampling from Gibbs states – states corresponding to system in thermal equilibrium – has recently been shown to be a task for which quantum computers are expected to achieve super-polynomial…

Paper

How to Sign Quantum Messages

Mohammed Barhoush and Louis Salvail,

Quantum 10, 1980 (2026).

Signing quantum messages has long been considered impossible even under computational assumptions. In this work, we challenge this notion and provide three innovative approaches to sign quan…

Paper

Hamiltonian Property Testing

Andreas Bluhm, Matthias C. Caro, and Aadil Oufkir,

Quantum 10, 1979 (2026).

Locality is a fundamental feature of many physical time evolutions. Assumptions on locality and related structural properties also underlie recently proposed procedures for learning an unkno…

Category: Paper