Quantum

Paper

Symmetry-enriched topological order in tensor networks: Defects, gauging and anyon condensation

Dominic J. Williamson, Nick Bultinck, and Frank Verstraete,

Quantum 10, 2199 (2026).

We study symmetry-enriched topological order in two-dimensional tensor network states by using graded matrix product operator algebras to represent symmetry-induced domain walls. A close con…

Paper

A brief history of quantum vs classical computational advantage

Ryan LaRose,

Quantum 10, 2198 (2026).

In this review article we summarize all experiments claiming quantum computational advantage to date. Our review highlights challenges, loopholes, and refutations appearing in subsequent wor…

Paper

Non-Gaussian Noise Magnetometry Using Local Spin Qubits

Jonathan B. Curtis, Amir Yacoby, and Eugene Demler,

Quantum 10, 2197 (2026).

Atomic scale qubits, as may be realized in nitrogen vacancy (NV) centers in diamond, offer the opportunity to study magnetic field noise with nanometer scale spatial resolution. Using these…

Paper

On the relation between perspective-neutral, algebraic, and effective quantum reference frames

Julian De Vuyst, Philipp A. Hoehn, and Artur Tsobanjan,

Quantum 10, 2196 (2026).

The framework of internal quantum reference frames (QRFs) constitutes a universal toolset for dealing with symmetries in quantum theory and has led to new revelations in quantum gravity, gau…

Paper

Simple logical quantum computation with concatenated symplectic double codes

Noah Berthusen and Elijah Durso-Sabina,

Quantum 10, 2195 (2026).

There have been significant recent advances in constructing theoretical and practical quantum error correcting codes that function well as quantum memories; however, performing fault-toleran…

Paper

Quantifying mixed-state entanglement via partial transpose and realignment moments

Poetri Sonya Tarabunga and Tobias Haug,

Quantum 10, 2194 (2026).

Entanglement plays a crucial role in quantum information science and many-body physics, yet quantifying it in mixed quantum many-body systems has remained a notoriously difficult problem. He…

Paper

Quantum phase estimation with optimal confidence interval using three control qubits

Kaur Kristjuhan and Dominic W. Berry,

Quantum 10, 2193 (2026).

Quantum phase estimation is an important routine in many quantum algorithms, particularly for estimating the ground state energy in quantum chemistry simulations. This estimation involves ap…

Paper

Measurement incompatibility in Bayesian multiparameter quantum estimation

Francesco Albarelli, Dominic Branford, and Jesús Rubio,

Quantum 10, 2192 (2026).

We present a comprehensive and pedagogical formulation of Bayesian multiparameter quantum estimation. Within this framework, we analyse the role of measurement incompatibility and establish…

Paper

Catalytic $z$-rotations in constant $T$-depth

Isaac H. Kim,

Quantum 10, 2191 (2026).

We show that the $T$-depth of any single-qubit $z$-rotation can be reduced to $3$ if a certain catalyst state is available. To achieve an $\epsilon$-approximation, it suffices to have a catalyst sta…

Paper

Robust topological quantum state transfer with long-range interactions in Rydberg arrays

Siri Raupach, Beatriz Olmos, and Mathias B. M. Svendsen,

Quantum 10, 2190 (2026).

We develop a theoretical framework for fast, robust and high-fidelity topological quantum state transfer in one-dimensional systems with long-range couplings, motivated by chains of Rydberg…

Paper

Efficient Graph State Generation in Linear Optics

Seungbeom Chin and William John Munro,

Quantum 10, 2189 (2026).

Graph states are central resources for quantum information processing, supporting applications in computation, communication, and error correction. In photonic systems, they are typically as…

Paper

Unconditional Quantum Advantage for Sampling with Shallow Circuits

Adam Bene Watts and Natalie Parham,

Quantum 10, 2188 (2026).

Recent work by Bravyi, Gosset, and Koenig showed that there exists a search problem that a constant-depth quantum circuit can solve, but that any constant-depth classical circuit with bounde…

Paper

Quantum Resource Comparison for Two Leading Surface Code Lattice Surgery Approaches

Tyler LeBlond and Ryan S. Bennink,

Quantum 10, 2187 (2026).

Hamiltonian simulation is one of the most promising candidates for the demonstration of quantum advantage within the next ten years, and several studies have proposed end-to-end resource est…

Paper

Disorder-Induced Entanglement Phase Transitions in Non-Hermitian Systems with Skin Effects

Kai Li, Ze-Chuan Liu, and Yong Xu,

Quantum 10, 2186 (2026).

Non-Hermitian dynamics is ubiquitous in various physical systems. While recent study shows that such a dynamics leads to an area-law scaling of the entanglement entropy due to the non-Hermit…

Paper

Promise of Graph Sparsification and Decomposition for Noise Reduction in QAOA: Analysis for Trapped-Ion Compilations

Jai Moondra, Phillip C. Lotshaw, Greg Mohler, and Swati Gupta,

Quantum 10, 2185 (2026).

We develop new approximate compilation schemes that significantly reduce the expense of compiling the Quantum Approximate Optimization Algorithm (QAOA) for solving the Max-Cut problem. Our m…

Paper

Detection of a Rényi Index Dependent Transition in Entanglement Entropy Scaling

Hatem Barghathi and Adrian Del Maestro,

Quantum 10, 2184 (2026).

The scaling of entanglement with subsystem size encodes key information about phases and criticality, but the von Neumann entropy is costly to access in experiments and simulations, often re…

Category: Paper