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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

Louis Jourdan and Patrick Cassam-Chenaï,

Quantum 10, 2057 (2026).

We show that the Zassenhaus decomposition for the exponential of the sum of two non-commuting operators, simplifies drastically when these operators satisfy a simple condition, called the no…