Quantum

Paper

Quantum recurrences and the arithmetic of Floquet dynamics

Amit Anand, Dinesh Valluri, Jack Davis, and Shohini Ghose,

Quantum 10, 2074 (2026).

The Poincaré recurrence theorem shows that conservative systems in a bounded region of phase space eventually return arbitrarily close to their initial state after a finite amount of time. A…

Paper

Clifford-Deformed Compass Codes

Julie A. Campos and Kenneth R. Brown,

Quantum 10, 2073 (2026).

We can design efficient quantum error-correcting (QEC) codes by tailoring them to our choice of quantum architecture. Useful tools for constructing such codes include Clifford deformations a…

Paper

Quantum convolutional channels and multiparameter families of 2-unitary matrices

Rafał Bistroń, Jakub Czartowski, and Karol Życzkowski,

Quantum 10, 2072 (2026).

Many alternative approaches to construct quantum channels with large entangling capacity were proposed in the past decade, resulting in multiple isolated gates. In this work, we put forward…

Paper

Diversity Methods for Improving Convergence and Accuracy of Quantum Error Correction Decoders Through Hardware Emulation

Francisco Garcia-Herrero, Javier Valls, Llanos Vergara-Picazo, and Vicente Torres,

Quantum 10, 2071 (2026).

As quantum computing moves toward fault-tolerant architectures, quantum error correction (QEC) decoder performance is increasingly critical for scalability. Understanding the impact of trans…

Paper

Quantum stick-slip motion in nanoscaled friction

Dai-Nam Le, Pablo Rodriguez-Lopez, and Lilia M. Woods,

Quantum 10, 2070 (2026).

Friction in atomistic systems is usually described by the classical Prandtl-Tomlinson model suitable for capturing the dragging force of a nanoparticle in a periodic potential. Here we consi…

Paper

Operational interpretation of the Stabilizer Entropy

Lennart Bittel and Lorenzo Leone,

Quantum 10, 2069 (2026).

Magic-state resource theory is a fundamental framework with far-reaching applications in quantum error correction and the classical simulation of quantum systems. Recent advances have signif…

Paper

Sampling (noisy) quantum circuits through randomized rounding

Victor Martinez, Omar Fawzi, and Daniel Stilck França,

Quantum 10, 2068 (2026).

The present era of quantum processors with hundreds to thousands of noisy qubits has sparked interest in understanding the computational power of these devices and how to leverage it to solv…

Paper

Spectral Gaps with Quantum Counting Queries and Oblivious State Preparation

Almudena Carrera Vazquez and Aleksandros Sobczyk,

Quantum 10, 2067 (2026).

Approximating the $k$-th spectral gap $\Delta _k=|\lambda_k-\lambda_{k+1}|$ and the corresponding midpoint $\mu_k=\frac{\lambda_k+\lambda_{k+1}}{2}$ of an $N\times N$ Hermitian matrix with eigenvalu…

Paper

Non-Markovian thermal reservoirs for autonomous entanglement distribution

Joan Agustí, Christian M. F. Schneider, Kirill G. Fedorov, Stefan Filipp, and Peter Rabl,

Quantum 10, 2066 (2026).

We describe a novel scheme for the generation of stationary entanglement between two separated qubits that are driven by a purely thermal photon source. While in this scenario the qubits rem…

Paper

A Hierarchy of Spectral Gap Certificates for Frustration-Free Spin Systems

Kshiti Sneh Rai, Ilya Kull, Patrick Emonts, Jordi Tura, Norbert Schuch, and Flavio Baccari,

Quantum 10, 2065 (2026).

Estimating spectral gaps of quantum many-body Hamiltonians is a highly challenging computational task, even under assumptions of locality and translation-invariance. Yet, the quest for rigor…

Paper

The Integral Decimation Method for Quantum Dynamics and Statistical Mechanics

Ryan T. Grimm, Alexander J. Staat, and Joel D. Eaves,

Quantum 10, 2064 (2026).

The solutions to many problems in the mathematical, computational, and physical sciences often involve multidimensional integrals. A direct numerical evaluation of the integral incurs a comp…

Paper

Quantum simulation algorithms based on quantum trajectories

Evan Borras and Milad Marvian,

Quantum 10, 2063 (2026).

Quantum simulation has emerged as a key application of quantum computing, with significant progress made in algorithms for simulating both closed and open quantum systems. The simulation of…

Paper

Swap Network Augmented Ansätze on Arbitrary Connectivity

Teodor Parella-Dilmé, Jakob S. Kottmann, and Antonio Acín,

Quantum 10, 2062 (2026).

Efficient parametrizations of quantum states are essential for trainable hybrid classical-quantum algorithms. A key challenge in their design consists in adapting to the available qubit conn…

Paper

Efficient and high-performance routing of lattice-surgery paths on three-dimensional lattice

Kou Hamada, Yasunari Suzuki, and Yuuki Tokunaga,

Quantum 10, 2061 (2026).

Encoding logical qubits with surface codes and performing multi-qubit logical operations with lattice surgery is one of the most promising approaches to demonstrate fault-tolerant quantum co…

Paper

A circuit-differentiation framework for Green’s functions on quantum computers

Samuele Piccinelli, Francesco Tacchino, Ivano Tavernelli, and Giuseppe Carleo,

Quantum 10, 2060 (2026).

We propose a general framework for computing Retarded Green's Functions (RGFs) on quantum computers by recasting their evaluation as a problem of circuit differentiation. Our proposal is bas…

Paper

Computing quantum magic of state vectors

Piotr Sierant, Jofre Vallès-Muns, and Artur Garcia-Saez,

Quantum 10, 2059 (2026).

Non-stabilizerness, also known as “magic,'' quantifies how far a quantum state departs from the stabilizer set. It is a central resource behind quantum advantage and a useful probe of the co…

Category: Paper