Entanglement growth in the dark intervals of a locally monitored free-fermion chain

Giovanni Di Fresco, Youenn Le Gal, Davide Valenti, Marco Schiró, and Angelo Carollo, Quantum 10, 2183 (2026). We consider a free fermionic chain with monitoring of the particle density on a single site...

quantum-journal.org

Entanglement-assisted Quasi-cyclic Quantum Low-density Parity-check Codes over Qubits

Pavan Kumar, Abhi Kumar Sharma, Karthik Bharadwaj, and Shayan Srinivasa Garani, Quantum 10, 2181 (2026). We construct several families of entanglement-assisted quasi-cyclic quantum LDPC (EA-QC-QLDPC)...

quantum-journal.org

Quantifiers and witnesses for the nonclassicality of measurements and of states

Yujie Zhang, Yìlè Yīng, and David Schmid, Quantum 10, 2180 (2026). In recent work [Phys. Rev. X 16, 021050], we proposed a unified notion of nonclassicality that applies to arbitrary processes in quantum...

quantum-journal.org

Stabilizer Ranks, Barnes Wall Lattices and Magic Monotones

Amolak Ratan Kalra and Pulkit Sinha, Quantum 10, 2179 (2026). In 2024, Kliuchnikov and Schönnenbeck showed a connection between the Barnes Wall lattices, stabilizer states and Clifford operations. In...

quantum-journal.org

Modulator-Assisted Zeno Control of Energy Transfer in Quantum Batteries

Songbo Xie, Manas Sajjan, Ashok Ajoy, and Sabre Kais, Quantum 10, 2178 (2026). Efficient operation of quantum batteries requires not only fast energy transfer but also the ability to halt the charging...

quantum-journal.org

atommovr: An open-source simulation framework for rearrangement in atomic arrays

Nikhil K Harle, Bo-Yu Chen, Bob Bao, and Hannes Bernien, Quantum 10, 2177 (2026). The task of atom rearrangement has emerged in the last decade as a fundamental building block in the development of neutral...

quantum-journal.org

Dynamical codes for hardware with noisy readouts

Peter-Jan H.S. Derks, Alex Townsend-Teague, Jens Eisert, Markus S. Kesselring, Oscar Higgott, and Benjamin J. Brown, Quantum 10, 2176 (2026). Dynamical stabilizer codes may offer a practical route to...

quantum-journal.org

A partition function framework for estimating logical error curves in stabilizer codes

Leon Wichette, Hans Hohenfeld, Elie Mounzer, and Linnea Grans-Samuelsson, Quantum 10, 2175 (2026). Based on the mapping between stabilizer quantum error correcting codes and disordered statistical mechanics...

quantum-journal.org

Quantum nonlocality without entanglement and state discrimination measures

Shayeef Murshid, Tathagata Gupta, Vincent Russo, and Somshubhro Bandyopadhyay, Quantum 10, 2174 (2026). An ensemble of product states is said to exhibit “quantum nonlocality without entanglement”...

quantum-journal.org

Pilot-Wave Simulator: Exact Classical Sampling from Ideal and Noisy Quantum Circuits up to Hundreds of Qubits

Gleb Kalachev, Pavel Mosharev, Zuoheng Zou, Pavel Panteleev, and Man-Hong Yung, Quantum 10, 2173 (2026). Quantum circuit simulators running on classical computers offer a vital platform for designing,...

quantum-journal.org

Hoare meets Heisenberg: A Lightweight Logic for Quantum Programs

Aarthi Sundaram, Robert Rand, Kartik Singhal, Youngchan Cho, and Brad Lackey, Quantum 10, 2172 (2026). We show that Gottesman's (1998) semantics for Clifford circuits based on the Heisenberg representation...

quantum-journal.org

A complete theory of the Clifford commutant

Lennart Bittel, Jens Eisert, Lorenzo Leone, Antonio A. Mele, and Salvatore F.E. Oliviero, Quantum 10, 2171 (2026). The Clifford group plays a central role in quantum information science. It is the building...

quantum-journal.org

Controller-decoder system requirements derived by implementing Shor’s algorithm with surface code

Yaniv Kurman, Lior Ella, Nir Halay, Oded Wertheim, and Yonatan Cohen, Quantum 10, 2170 (2026). Quantum Error Correction (QEC) is regarded as the most promising path to quantum advantage. The success of...

quantum-journal.org

Non-commutative optimization problems with differential constraints

Mateus Araújo, Andrew J. P. Garner, and Miguel Navascués, Quantum 10, 2169 (2026). Non-commutative polynomial optimization (NPO) problems seek to minimize the state average of a polynomial of some operator...

quantum-journal.org

Quantum state preparation with optimal T-count

David Gosset, Robin Kothari, and Kewen Wu, Quantum 10, 2168 (2026). How many $T$ gates are needed to approximate an arbitrary $n$-qubit quantum state to within error $\varepsilon$? Improving prior work...

quantum-journal.org

Optimal schedule of multi-channel quantum Zeno dragging with application to solving the k-SAT problem

Yipei Zhang, Alain Sarlette, Philippe Lewalle, Tathagata Karmakar, Thilo Scharnhorst, and K. Birgitta Whaley, Quantum 10, 2167 (2026). Quantum Zeno dragging enables the preparation of common eigenstates...

quantum-journal.org

Resource quantification for programming low-depth quantum circuits

Entong He and Yuxiang Yang, Quantum 10, 2166 (2026). Noisy intermediate-scale quantum (NISQ) devices pave the way for implementing quantum algorithms that offer quantum advantages over their classical...

quantum-journal.org

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...

quantum-journal.org

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....

quantum-journal.org

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...

quantum-journal.org

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...

quantum-journal.org

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...

quantum-journal.org

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...

quantum-journal.org

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...

quantum-journal.org

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...

quantum-journal.org

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...

quantum-journal.org

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...

quantum-journal.org

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....

quantum-journal.org

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...

quantum-journal.org

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...

quantum-journal.org