Quantum

Paper

Qubit operations using a modular optical system engineered with PyOpticL: a code-to-CAD optical layout tool

Jacob Myers, Christopher Caron, Nishat Helaly, Zhenyu Wei, Justin Oh, Zack Gotobed, Kotaro Yabe, and Robert J. Niffenegger,

Quantum 10, 2135 (2026).

Complex optical design is hindered by conventional piecewise setup, which prevents modularization and therefore abstraction of subsystems at the circuit level. This limits multiple fields th…

Paper

Simulating magic state cultivation with few Clifford terms

Kwok Ho Wan, Zhenghao Zhong, and Ainhoa Zapirain,

Quantum 10, 2134 (2026).

Building upon $\textit{Wan, Zhong (2025)}$ [5] we present a few methods on how to simulate the non-Clifford $d=5$ magic state cultivation circuits[4] with a sum of $\approx 8$ Clifford ZX-diagrams…

Paper

Exploring Variational Entanglement Hamiltonians

Yanick S. Kind and Benedikt Fauseweh,

Quantum 10, 2133 (2026).

Recent advances in analog and digital quantum-simulation platforms have enabled exploration of the spectrum of entanglement Hamiltonians via variational algorithms. In this work we analyze t…

Paper

Lie algebraic invariants in quantum linear optics

Pablo V. Parellada, Vicent Gimeno i Garcia, Julio José Moyano-Fernández, and Juan Carlos Garcia-Escartin,

Quantum 10, 2132 (2026).

Quantum linear optics without post-selection is not powerful enough to produce any quantum state from a given input state. This limits its utility since some applications require entangled r…

Paper

Device-independent secure correlations in sequential quantum scenarios

Matteo Padovan, Alessandro Rezzi, and Lorenzo Coccia,

Quantum 10, 2131 (2026).

Device-independent quantum information is attracting significant attention, particularly for its applications in information security. This interest arises because the security of device-ind…

Paper

Characterizing resources for multiparameter estimation of SU(2) and SU(1,1) unitaries

Shaowei Du, Shuheng Liu, Frank E. S. Steinhoff, and Giuseppe Vitagliano,

Quantum 10, 2130 (2026).

We analyze the task of estimating a multi-parameter unitary belonging to the $SU(2)$ or $SU(1,1)$ groups, in a two-bosonic-mode scenario and investigate the scaling of the precision in terms of…

Paper

Long-time Freeness in the Kicked Top

Elisa Vallini and Silvia Pappalardi,

Quantum 10, 2129 (2026).

Recent work highlighted the importance of higher-order correlations in quantum dynamics for a deeper understanding of quantum chaos and thermalization. The full Eigenstate Thermalization Hyp…

Paper

Detecting Entanglement by State Preparation and Local Measurements

Jaemin Kim, Anindita Bera, Dariusz Chruściński, and Joonwoo Bae,

Quantum 10, 2128 (2026).

Entanglement witnesses (EWs) are a collection of observables that can characterize separable states and, experimentally, estimating EWs can verify entangled states. In this work, we show tha…

Paper

Classical shadows for sample-efficient measurements of gauge-invariant observables

Jacob Bringewatt, Henry Froland, Andreas Elben, and Niklas Mueller,

Quantum 10, 2127 (2026).

Classical shadows provide a versatile framework for estimating many properties of quantum states from repeated, randomly chosen measurements without requiring full quantum state tomography.…

Paper

What can we do in a symmetry-constrained perspective? The importance of the total charge’s status in quantum reference frame frameworks

Guilhem Doat and Augustin Vanrietvelde,

Quantum 10, 2126 (2026).

The study of quantum reference frames has received renewed interest over the last years, leading to the parallel development of non-equivalent frameworks by different communities. We clarify…

Paper

A local automaton for the 2D toric code

Shankar Balasubramanian, Margarita Davydova, and Ethan Lake,

Quantum 10, 2125 (2026).

We construct a local decoder for the 2D toric code using ideas from the hierarchical classical cellular automata of Tsirelson and Gács. Our decoder is a circuit of strictly local quantum ope…

Paper

A Practical Protocol for Quantum Oblivious Transfer from One-Way Functions

Eleni Diamanti, Alex B. Grilo, Adriano Innocenzi, Pascal Lefebvre, Verena Yacoub, and Álvaro Yángüez,

Quantum 10, 2124 (2026).

We present a new simulation-secure quantum oblivious transfer (QOT) protocol based on one-way functions in the plain model. With a focus on practical implementation, our protocol surpasses p…

Paper

Quantum Cellular Automata on Symmetric Subalgebras

Ruochen Ma, Yabo Li, and Meng Cheng,

Quantum 10, 2123 (2026).

We investigate quantum cellular automata (QCA) on one-dimensional spin systems defined over a subalgebra of the full local operator algebra – the symmetric subalgebra under a finite Abelian…

Paper

Squeezing Enhancement in Lossy Multi-Path Atom Interferometers

Julian Günther, Jan-Niclas Kirsten-Siemß, Naceur Gaaloul, and Klemens Hammerer,

Quantum 10, 2122 (2026).

This paper explores the sensitivity gains afforded by spin-squeezed states in atom interferometry, in particular using Bragg diffraction. We introduce a generalised input-output formalism th…

Paper

Bosonic content of three-fermion highest-spin states

Jerzy Cioslowski, Krzysztof Strasburger, and Denis K. Sunko,

Quantum 10, 2121 (2026).

A rigorous characterization of the information content of any highest-spin three-fermion wave function is presented. It is based upon a formal decomposition of the wave function into a finit…

Paper

Exact distinguishability between real-valued and complex-valued Haar random quantum states

Tristan Nemoz, Romain Alléaume, and Peter Brown,

Quantum 10, 2120 (2026).

Haar random states are fundamental objects in quantum information theory and quantum computing. We study the density matrix resulting from sampling $t$ copies of a $d$-dimensional quantum state…

Category: Paper