Category: Paper

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…

Varun Narasimhachar,

Quantum 9, 1707 (2025).

Quantum coherence—an indispensable resource for quantum technologies—is known to be distillable from a noisy form using operations that cannot create it. However, distillation exacts a hidde…

Llorenç Escolà-Farràs, Jaròn Has, Maris Ozols, Christian Schaffner, and Mehrdad Tahmasbi,

Quantum 9, 1706 (2025).

Local simultaneous state discrimination (LSSD) is a recently introduced problem in quantum information processing. Its classical version is a non-local game played by non-communicating playe…

Mykola Semenyakin, Yevheniia Cheipesh, and Yaroslav Herasymenko,

Quantum 9, 1705 (2025).

Understanding the structure of quantum correlations in a many-body system is key to its computational treatment. For fermionic systems, correlations can be defined as deviations from Slater…

Aaron Szasz, Ed Younis, and Wibe Albert de Jong,

Quantum 9, 1704 (2025).

Models of interacting many-body quantum systems that may realize new exotic phases of matter, notably quantum spin liquids, are challenging to study using even state-of-the-art classical met…

Matthias Rosenkranz, Eric Brunner, Gabriel Marin-Sanchez, Nathan Fitzpatrick, Silas Dilkes, Yao Tang, Yuta Kikuchi, and Marcello Benedetti,

Quantum 9, 1703 (2025).

A fundamental step of any quantum algorithm is the preparation of qubit registers in a suitable initial state. Often qubit registers represent a discretization of continuous variables and th…

Jorge Miguel-Ramiro, Alexander Pirker, and Wolfgang Dür,

Quantum 9, 1702 (2025).

Entanglement purification and distillation protocols are essential for harnessing the full potential of quantum communication technologies. Multiple strategies have been proposed to approach…

F. Setiawan, Alexander V. Gramolin, Elisha S. Matekole, Hari Krovi, and Jacob M. Taylor,

Quantum 9, 1701 (2025).

Accurate modeling of noise in realistic quantum processors is critical for constructing fault-tolerant quantum computers. While a full simulation of actual noisy quantum circuits provides in…

Klára Baksová, Olga Leskovjanová, Ladislav Mišta Jr., Elizabeth Agudelo, and Nicolai Friis,

Quantum 9, 1699 (2025).

Multi-copy activation of genuine multipartite entanglement (GME) is a phenomenon whereby multiple copies of biseparable but fully inseparable states can exhibit GME. This was shown to be gen…