Fault-tolerant structures for measurement-based quantum computation on a network

Ziang Wang, Feng Wu, Hui-Hai Zhao, Xin Wan, and Xiaotong Ni,

Quantum 9, 1722 (2025).

One significant advantage of superconducting processors is their extensive design flexibility, which encompasses various types of qubits and interactions. Given the large number of tunable p…

Vittorio D’Esposito, Giuseppe Fabiano, Domenico Frattulillo, and Flavio Mercati,

Quantum 9, 1721 (2025).

Motivated by the expectation that relativistic symmetries might acquire quantum features in Quantum Gravity, we take the first steps towards a theory of ''Doubly'' Quantum Mechanics, a modif…

Adam Burchardt and Frederik Hahn,

Quantum 9, 1720 (2025).

This paper introduces the foliage partition, an easy-to-compute LC-invariant for graph states, of computational complexity $\mathcal{O}(n^3)$ in the number of qubits. Inspired by the foliage o…

Szilárd Szalay and Géza Tóth,

Quantum 9, 1718 (2025).

We work out the general theory of one-parameter families of partial entanglement properties and the resulting entanglement depth-like quantities. Special cases of these are the depth of part…

Jordi Weggemans,

Quantum 9, 1717 (2025).

In unitary property testing a quantum algorithm, also known as a tester, is given query access to a black-box unitary and has to decide whether it satisfies some property. We propose a new t…

Yaroslav Balytskyi, Yevgen Kotukh, Gennady Khalimov, and Sang-Yoon Chang,

Quantum 9, 1716 (2025).

$\mathcal{PT}$-symmetric systems have garnered significant attention due to their unconventional properties. Despite the growing interest, there remains an ongoing debate about whether these s…

Dominique Spehner,

Quantum 9, 1715 (2025).

We study the geodesics on the manifold of mixed quantum states for the Bures metric. It is shown that these geodesics correspond to physical non-Markovian evolutions of the system coupled to…

Marco Ballarin, Pietro Silvi, Simone Montangero, and Daniel Jaschke,

Quantum 9, 1714 (2025).

We introduce an optimal strategy to sample quantum outcomes of local measurement strings for isometric tensor network states. Our method generates samples based on an exact cumulative boundi…

Simone Roncallo, Xi Lu, and Lorenzo Maccone,

Quantum 9, 1713 (2025).

We propose an interferometric scheme where each photon returns one bit of the binary expansion of an unknown phase. It sets up a method for estimating the phase value at arbitrary uncertaint…

Llorenç Escolà-Farràs and Florian Speelman,

Quantum 9, 1712 (2025).

Extended non-local games are a generalization of monogamy-of-entanglement games, played by two quantum parties and a quantum referee that performs a measurement on their local quantum system…

Niv Bharos, Liubov Markovich, and Johannes Borregaard,

Quantum 9, 1711 (2025).

The use of higher-dimensional photonic encodings (qudits) instead of two-dimensional encodings (qubits) can improve the loss tolerance and reduce the computational resources of photonic-base…

Matias Bundgaard-Nielsen, Dirk Englund, Mikkel Heuck, and Stefan Krastanov,

Quantum 9, 1710 (2025).

In this paper, we introduce a numerical framework designed to solve problems within the emerging field of Waveguide Quantum Electrodynamics (WQED). The framework is based on collision quantu…

Felix Fritzsch, Maximilian F. I. Kieler, and Arnd Bäcker,

Quantum 9, 1709 (2025).

While the notion of quantum chaos is tied to random matrix spectral correlations, also eigenstate properties in chaotic systems are often assumed to be described by random matrix theory. Ana…

Zoltán Kolarovszki, Tomasz Rybotycki, Péter Rakyta, Ágoston Kaposi, Boldizsár Poór, Szabolcs Jóczik, Dániel T. R. Nagy, Henrik Varga, Kareem H. El-Safty, Gregory Morse, Michał Oszmaniec, Tamás Kozsik, and Zoltán Zimborás,

Quantum 9, 1708 (2025).

We introduce the Piquasso quantum programming framework, a full-stack open-source software platform for the simulation and programming of photonic quantum computers. Piquasso can be programm…