Quantum

Quantum has published 2164 Papers in 10 Volumes, as well as 86 Views in Quantum Views.

Policy Update: New editorial onboarding and review procedures

Dear Quantum Community, We wanted to provide an update and announce a new attempt to improve the quality of peer review procedures in Quantum. TL;DR: from now on, instead of …

Paper

Complexity of graph-state preparation by Clifford circuits

Soh Kumabe, Ryuhei Mori, and Yusei Yoshimura,

Quantum 10, 2165 (2026).

In this work, we study the complexity of graph-state preparation in a general model of quantum algorithms that allows measurements in the computational basis, single-qubit Clifford operation…

Paper

Exact Quantum Many-Body Scars in 2D Quantum Gauge Models

Yuan Miao, Linhao Li, Hosho Katsura, and Masahito Yamazaki,

Quantum 10, 2164 (2026).

Quantum many-body scars (QMBS) serve as important examples of ergodicity-breaking phenomena in quantum many-body systems. Despite recent extensive studies, exact QMBS are rare in dimensions…

Paper

Shadow Pauli Flow: Characterising Determinism in MBQCs involving Pauli Measurements

Mehdi Mhalla, Simon Perdrix, and Luc Sanselme,

Quantum 10, 2163 (2026).

We introduce a new characterisation of determinism in Measurement-Based Quantum Computing (MBQC). The one-way model consists in performing local measurements over a large entangled state rep…

Paper

Fast quantum measurement tomography with optimal error bounds

Leonardo Zambrano, Sergi Ramos-Calderer, and Richard Kueng,

Quantum 10, 2162 (2026).

We present a two-step protocol for quantum measurement tomography that is light on classical co-processing cost and still achieves optimal sample complexity. Given measurement data from a kn…

Paper

MPC in the Quantum Head (or: Superposition-Secure (Quantum) Zero-Knowledge)

Andrea Coladangelo, Ruta Jawale, Dakshita Khurana, Giulio Malavolta, and Hendrik Waldner,

Quantum 10, 2161 (2026).

The MPC-in-the-head technique (Ishai et al., STOC 2007) is a celebrated method to build zero-knowledge protocols with desirable theoretical properties and high practical efficiency. This tec…

Paper

Geometric speed limit of state preparation and curved control spaces

Maximilian Goll and Robert H. Jonsson,

Quantum 10, 2160 (2026).

The preparation of quantum many-body systems faces the difficulty that in a realistic scenario only few control parameters of the system may be accessible. In this context, an interesting co…

Paper

From Superradiance to Superabsorption: An Exact Treatment of Non-Markovian Cooperative Radiation

Ignacio González and Ángel Rivas,

Quantum 10, 2159 (2026).

We investigate the emergence of cooperative radiation phenomena in ensembles of two-level atoms coupled to a lossy resonant cavity beyond the Markovian and mean-field approximations. By deri…

Paper

Near-Optimal Parameter Tuning of Level-1 QAOA for Ising Models

V Vijendran, Dax Enshan Koh, Eunok Bae, Hyukjoon Kwon, Ping Koy Lam, and Syed M Assad,

Quantum 10, 2158 (2026).

The Quantum Approximate Optimisation Algorithm (QAOA) tackles combinatorial optimisation problems by encoding their solutions into the ground state of an Ising Hamiltonian prepared by a $p$-le…

Paper

Towards Unconditional Uncloneable Encryption

Pierre Botteron, Anne Broadbent, Eric Culf, Ion Nechita, Clément Pellegrini, and Denis Rochette,

Quantum 10, 2157 (2026).

Uncloneable encryption is a cryptographic primitive which encrypts a classical message into a quantum ciphertext, such that two quantum adversaries are limited in their capacity of being abl…

Paper

Enlarging the GKP stabilizer group for enhanced noise protection

Jonathan Pelletier and Baptiste Royer,

Quantum 10, 2156 (2026).

Encoding a qubit in a larger Hilbert space of an oscillator is an efficient way to protect its quantum information against decoherence. Promising examples of such bosonic encodings are the G…

Paper

Resourcefulness of non-classical continuous-variable quantum gates

Massimo Frigerio, Antoine Debray, Nicolas Treps, and Mattia Walschaers,

Quantum 10, 2155 (2026).

In continuous-variable quantum computation, identifying key elements that enable a quantum computational advantage is a long-standing issue. Starting from the standard results on the necessi…

Paper

Quantum Alternating Direction Method of Multipliers for Semidefinite Programming

Hantao Nie, Dong An, and Zaiwen Wen,

Quantum 10, 2154 (2026).

Semidefinite programming (SDP) is a fundamental convex optimization problem with wide-ranging applications. However, solving large-scale instances remains computationally challenging due to…

Paper

Exploring Imaginary Coordinates: Disparity in the Shape of Quantum State Space in Even and Odd Dimensions

Simon Morelli, Santiago Llorens, and Jens Siewert,

Quantum 10, 2153 (2026).

The state of a finite-dimensional quantum system is described by a density matrix that can be decomposed into a real diagonal, a real off-diagonal and and an imaginary off-diagonal part. The…

Paper

A complexity theory for non-local quantum computation

Andreas Bluhm, Simon Höfer, Alex May, Mikka Stasiuk, Philip Verduyn Lunel, and Henry Yuen,

Quantum 10, 2152 (2026).

Non-local quantum computation (NLQC) replaces a local interaction between two systems with a single round of communication and shared entanglement. Despite many partial results, it is known…

Paper

Learning thermodynamic master equations for open quantum systems

Peter Sentz, Stanley Nicholson, Yujin Cho, Sohail Reddy, Brendan Keith, and Stefanie Günther,

Quantum 10, 2151 (2026).

The characterization of Hamiltonians and other components of open quantum dynamical systems plays a crucial role in quantum computing and other applications. Scientific machine learning tech…

Paper

Entanglement in the Dicke subspace

Aabhas Gulati, Ion Nechita, and Clément Pellegrini,

Quantum 10, 2150 (2026).

We provide a complete mathematical theory for the entanglement of mixtures of Dicke states. These quantum states form an important subclass of bosonic states arising in the study of indistin…