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…

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…

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 of the chain and study the entanglement dynamics of quantum jump trajectories. We show that the en…

Kazuki Sakamoto and Keisuke Fujii,

Quantum 10, 2182 (2026).

The simulation of large-scale classical systems in exponentially small space on quantum computers has gained attention. The prior work demonstrated that a quantum algorithm offers an exponen…

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) codes via structured tilings of permutation matrices. The entanglement-unassisted portion of th…

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 theory, including individual quantum states, measurem…

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 process to prevent reverse flow. Existing approaches typically rely…

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 atom-based quantum processors. As such processors grow to thousand…

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 large-scale quantum computation. Such codes are defined by a schedule of error-detecting measurements, which allows for flexibility…

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, testing, and optimizing quantum algorithms, driving innovation despite limited access to real…

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 gives rise to a lightweight Hoare-like logic for efficiently characterizing a common su…

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 QEC relies on achieving quantum gate fidelities below the error threshold of the QE…

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 counterparts. Due to the intrinsic noise a…

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…

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…

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…

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…

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…

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…

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…

Caroline L. Jones and Markus P. Mueller,

Quantum 10, 2147 (2026).

There has been a surge of recent interest in the Wigner's Friend paradox, sparking several novel thought experiments and no-go theorems. The main narrative has been that Wigner's Friend high…

Marcelo Janovitch, Matteo Brunelli, and Patrick P. Potts,

Quantum 10, 2143 (2026).

Quantum reservoir engineering leverages dissipative processes to achieve desired behaviour, with applications ranging from entanglement generation to quantum error correction. Therein, a str…

Lucas E. A. Porto, Sébastien Designolle, Sebastian Pokutta, and Marco Túlio Quintino,

Quantum 10, 2141 (2026).

The problem of deciding whether a set of quantum measurements is jointly measurable is known to be equivalent to determining whether a quantum assemblage is unsteerable. This problem can be…

Ryu Hayakawa, Kuo-Chin Chen, and Min-Hsiu Hsieh,

Quantum 10, 2138 (2026).

This work investigates whether quantum walks on simplicial complexes exhibit quantum advantages. We introduce a novel quantum walk that encodes the combinatorial Laplacian, a key object refl…

Vasco Cavina and Massimiliano Esposito,

Quantum 10, 2136 (2026).

We introduce a non-equilibrium version of the Caldeira-Leggett model in which a quantum particle is strongly coupled to a set of engineered reservoirs. The reservoirs are composed by collect…

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…

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…

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…

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…

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…

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…

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.…

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…

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…

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…

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…

Hemant Sharma, Aleksandr Mokeev, Jonas Helsen, and Johannes Borregaard,

Quantum 10, 2117 (2026).

The availability of certain entangled resource states (catalyst states) can enhance the rate of converting several less entangled states into fewer highly entangled states in a process known…

Laurens Walleghem, Rui Soares Barbosa, Matthew F. Pusey, and Stefan Weigert,

Quantum 10, 2116 (2026).

The Frauchiger–Renner paradox derives an inconsistency when quantum theory is used to describe the use of itself, by means of a scenario where agents model other agents quantumly and reason…

Dmytro Kolisnyk, Raimel A. Medina, Romain Vasseur, and Maksym Serbyn,

Quantum 10, 2114 (2026).

A defining feature of quantum many-body systems is the exponential scaling of the Hilbert space with the number of degrees of freedom. This exponential complexity naïvely renders a complete…

Sigmund Kohler and Jesús Casado-Pascual,

Quantum 10, 2112 (2026).

We investigate the Floquet spectrum of a detuned, driven two-level system and show that it exhibits exact quasienergy crossings when the detuning is an integer multiple of the energy quantum…

Aqil Sajjad, Eneet Kaur, Kenneth Goodenough, Don Towsley, and Saikat Guha,

Quantum 10, 2111 (2026).

Graph states are a key resource for a number of applications in quantum information theory. Due to the inherent noise in noisy intermediate-scale quantum (NISQ) era devices, it is important…

Ulysse Chabaud, Michael Joseph, Saeed Mehraban, and Arsalan Motamedi,

Quantum 10, 2110 (2026).

Quantum computing involving physical systems with continuous degrees of freedom, such as the quantum states of light, has recently attracted significant interest. However, a well-defined qua…

Lesley Gover, Vinul Wimalaweera, Fariha Azad, Matthew DeCross, Michael Foss-Feig, and Andrew G. Green,

Quantum 10, 2109 (2026).

We time-evolve a translationally invariant quantum state on the Quantinuum H1-1 trapped-ion quantum processor, studying the dynamical quantum phase transition of the transverse field Ising m…

Marcell D. Kovács, Christopher J. Turner, Lluis Masanes, and Arijeet Pal,

Quantum 10, 2107 (2026).

Floquet quantum circuits are able to realise a wide range of non-equilibrium quantum states, exhibiting quantum chaos, topological order and localisation. In this work, we investigate the st…

Jonte R. Hance, Ming Ji, Tomonori Matsushita, and Holger F. Hofmann,

Quantum 10, 2106 (2026).

Quantum paradoxes show that the outcomes of different quantum measurements cannot be described by a single measurement-independent reality. Any theoretical description of a quantum measureme…

Frédéric Grosshans, Michał Horodecki, Mio Murao, Tomasz Młynik, Marco Túlio Quintino, Michał Studziński, and Satoshi Yoshida,

Quantum 10, 2105 (2026).

This work considers a teleportation task for Alice and Bob in a scenario where Bob cannot perform corrections. In particular, we analyse the task of $\textit{multicopy state teleportation}$, w…

Roberto Salazar, Jakub Czartowski, Ricard Ravell Rodríguez, Grzegorz Rajchel-Mieldzioć, Paweł Horodecki, and Karol Życzkowski,

Quantum 10, 2104 (2026).

A class of quantum resource theories, based on non-convex star-shape sets, presented in this work captures the key quantum properties that cannot be studied by standard convex theories. We p…

Alberto R. Cavallar, Luis Escalera-Moreno, Titus Franz, Timon Hilker, J. Ignacio Cirac, Philipp M. Preiss, and Benjamin F. Schiffer,

Quantum 10, 2103 (2026).

Fermionic quantum processors are a promising platform for quantum simulation of correlated fermionic matter. In this work, we study a hardware-efficient protocol for measuring complex expect…

Yuki Ito, Hitomi Mori, Kazuki Sakamoto, and Keisuke Fujii,

Quantum 10, 2102 (2026).

Quantum signal processing (QSP) and quantum singular value transformation (QSVT) have provided a unified framework for understanding many quantum algorithms, including factorization, matrix…

Martin Plesch, Martin Friák, and Ijaz Ahamed Mohammad,

Quantum 10, 2099 (2026).

Current and near-term quantum hardware is constrained by limited qubit counts, circuit depth, and the high cost of repeated measurements. We address these challenges for solid-state Hamilton…

Gabriel Waite and Michael J. Bremner,

Quantum 10, 2097 (2026).

We show the 2-Local Stoquastic Hamiltonian problem on a 2D square qubit lattice is StoqMA-complete. We achieve this by extending the spatially sparse circuit construction of Oliveira and Ter…

Oliver Hahn, Maxime Garnier, Giulia Ferrini, Alessandro Ferraro, and Ulysse Chabaud,

Quantum 10, 2095 (2026).

State conversion is a fundamental task in quantum information processing. Quantum resource theories allow for analyzing and bounding conversions that use restricted sets of operations. In th…

Tatsuya Numajiri, Shion Yamashika, Tomonori Tanizawa, Ryosuke Yoshii, Yuki Takeuchi, and Shunji Tsuchiya,

Quantum 10, 2094 (2026).

Graph states are entangled states that are essential for quantum information processing. As experimental advances enable the realization of large-scale graph states, efficient fidelity estim…

Balint Pato, June Vanlerberghe, and Kenneth R. Brown,

Quantum 10, 2092 (2026).

Calculating the quantum weight enumerator polynomial (WEP) is a valuable tool for characterizing quantum error-correcting (QEC) codes, but it is computationally hard for large or complex cod…

Marta Florido-Llinàs, Álvaro M. Alhambra, David Pérez-García, and J. Ignacio Cirac,

Quantum 10, 2089 (2026).

We introduce regular language states, a family of quantum many-body states. They are built from a special class of formal languages, called regular, which has been thoroughly studied in the…

Zackary Jorquera, Alexandra Kolla, Steven Kordonowy, Juspreet Singh Sandhu, and Stuart Wayland,

Quantum 10, 2088 (2026).

We prove new monogamy of entanglement bounds for two-local qudit Hamiltonians of rank-one projectors without one-local terms. In particular, we certify the maximum energy in terms of the max…

Raúl Morral-Yepes, Marc Langer, Adam Gammon-Smith, Barbara Kraus, and Frank Pollmann,

Quantum 10, 2087 (2026).

In unitary circuit games, two competing parties, an "entangler" and a "disentangler", can induce an entanglement phase transition in a quantum many-body system. The transition occurs at a ce…

Andreas Elben and Benoit Vermersch,

Quantum 10, 2086 (2026).

We introduce $\texttt{RandomMeas.jl}$, a modular and high-performance open-source software package written in Julia for implementing and analyzing randomized measurement protocols in quantum c…

Dolf Huybrechts and Tommaso Roscilde,

Quantum 10, 2085 (2026).

The coupling of a quantum system to an environment leads generally to decoherence, and it is detrimental to quantum correlations within the system itself. Yet some forms of quantum correlati…

Konrad Schlichtholz, Bianka Woloncewicz, Tamoghna Das, Marcin Markiewicz, and Marek Żukowski,

Quantum 10, 2084 (2026).

The question of “non-locality of a single photon'', which started with a paper by Tan, Walls and Collett (TWC, 1991) stirred a thirty years long debate. This hampered attempts to use the TWC…

Nouédyn Baspin and Dominic Williamson,

Quantum 10, 2083 (2026).

Quantum information is fragile and must be protected by a quantum error-correcting code for large-scale practical applications. Recently, highly efficient quantum codes have been discovered…

Adrien Kahn, Luca Gravina, and Filippo Vicentini,

Quantum 10, 2082 (2026).

We present a formalism that allows for the direct manipulation and optimization of subspaces, circumventing the need to optimize individual states when using subspace methods. Using the dete…

Florian Bönsel, Flore K. Kunst, and Federico Roccati,

Quantum 10, 2081 (2026).

Waveguide quantum electrodynamics (QED) provides a powerful framework for engineering quantum interactions, traditionally relying on periodic photonic arrays with continuous energy bands. He…

Clara Wassner, Tommaso Guaita, Jens Eisert, and Jose Carrasco,

Quantum 10, 2080 (2026).

Holonomic quantum computation exploits the geometric evolution of eigenspaces of a degenerate Hamiltonian to implement unitary evolution of computational states. In this work we introduce a…

Zhi-Yuan Wei and Daniel Malz,

Quantum 10, 2079 (2026).

We introduce parallel-sequential (PS) circuits, a family of quantum circuit layouts that interpolate between brickwall and sequential circuits, which introduces control parameters governing…

Julia Mathé, Ayaka Usui, Otfried Gühne, and Giuseppe Vitagliano,

Quantum 10, 2078 (2026).

We discuss the estimation of the distance of a given mixed many-body quantum state to the set of fully separable states, applied to the concrete scenario of collective spin states. Concretel…

Julie A. Campos and Kenneth R. Brown,

Quantum 10, 2073 (2026).

We can design efficient quantum error-correcting (QEC) codes by tailoring them to our choice of quantum architecture. Useful tools for constructing such codes include Clifford deformations a…

Rafał Bistroń, Jakub Czartowski, and Karol Życzkowski,

Quantum 10, 2072 (2026).

Many alternative approaches to construct quantum channels with large entangling capacity were proposed in the past decade, resulting in multiple isolated gates. In this work, we put forward…

Dai-Nam Le, Pablo Rodriguez-Lopez, and Lilia M. Woods,

Quantum 10, 2070 (2026).

Friction in atomistic systems is usually described by the classical Prandtl-Tomlinson model suitable for capturing the dragging force of a nanoparticle in a periodic potential. Here we consi…

Victor Martinez, Omar Fawzi, and Daniel Stilck França,

Quantum 10, 2068 (2026).

The present era of quantum processors with hundreds to thousands of noisy qubits has sparked interest in understanding the computational power of these devices and how to leverage it to solv…

Joan Agustí, Christian M. F. Schneider, Kirill G. Fedorov, Stefan Filipp, and Peter Rabl,

Quantum 10, 2066 (2026).

We describe a novel scheme for the generation of stationary entanglement between two separated qubits that are driven by a purely thermal photon source. While in this scenario the qubits rem…

Kshiti Sneh Rai, Ilya Kull, Patrick Emonts, Jordi Tura, Norbert Schuch, and Flavio Baccari,

Quantum 10, 2065 (2026).

Estimating spectral gaps of quantum many-body Hamiltonians is a highly challenging computational task, even under assumptions of locality and translation-invariance. Yet, the quest for rigor…

Ryan T. Grimm, Alexander J. Staat, and Joel D. Eaves,

Quantum 10, 2064 (2026).

The solutions to many problems in the mathematical, computational, and physical sciences often involve multidimensional integrals. A direct numerical evaluation of the integral incurs a comp…

Evan Borras and Milad Marvian,

Quantum 10, 2063 (2026).

Quantum simulation has emerged as a key application of quantum computing, with significant progress made in algorithms for simulating both closed and open quantum systems. The simulation of…

Teodor Parella-Dilmé, Jakob S. Kottmann, and Antonio Ací­n,

Quantum 10, 2062 (2026).

Efficient parametrizations of quantum states are essential for trainable hybrid classical-quantum algorithms. A key challenge in their design consists in adapting to the available qubit conn…

Kou Hamada, Yasunari Suzuki, and Yuuki Tokunaga,

Quantum 10, 2061 (2026).

Encoding logical qubits with surface codes and performing multi-qubit logical operations with lattice surgery is one of the most promising approaches to demonstrate fault-tolerant quantum co…

Samuele Piccinelli, Francesco Tacchino, Ivano Tavernelli, and Giuseppe Carleo,

Quantum 10, 2060 (2026).

We propose a general framework for computing Retarded Green's Functions (RGFs) on quantum computers by recasting their evaluation as a problem of circuit differentiation. Our proposal is bas…

Piotr Sierant, Jofre Vallès-Muns, and Artur Garcia-Saez,

Quantum 10, 2059 (2026).

Non-stabilizerness, also known as “magic,'' quantifies how far a quantum state departs from the stabilizer set. It is a central resource behind quantum advantage and a useful probe of the co…

Louis Jourdan and Patrick Cassam-Chenaï,

Quantum 10, 2057 (2026).

We show that the Zassenhaus decomposition for the exponential of the sum of two non-commuting operators, simplifies drastically when these operators satisfy a simple condition, called the no…

E. Rule, I. A. Chernyshev, I. Stetcu, J. Carlson, and R. Weiss,

Quantum 10, 2056 (2026).

We devise a deterministic quantum algorithm to produce antisymmetric states of single-particle orbitals in the first quantization mapping. Unlike sorting-based antisymmetrization algorithms,…

Abigail N. Poteshman, Jiwon Yun, Tim H. Taminiau, and Giulia Galli,

Quantum 10, 2055 (2026).

High-throughput characterization often requires estimating parameters and model dimension from experimental data of limited quantity and quality. Such data may result in an ill-posed inverse…

Wai-Keong Mok,

Quantum 10, 2054 (2026).

Power-law probability distributions are widely used to model extreme statistical events in complex systems, with applications to a vast array of natural phenomena ranging from earthquakes to…

Adrian Chapman and Steven T. Flammia,

Quantum 10, 2053 (2026).

Fermionic averaged circuit eigenvalue sampling (FACES) is a protocol to simultaneously learn the averaged error rates of many fermionic linear optical (FLO) gates simultaneously and self-con…

Brian Doolittle, Felix Leditzky, and Eric Chitambar,

Quantum 10, 2052 (2026).

Quantum resources, such as entanglement or quantum communication, offer significant communication advantages in information processing. We develop an operational framework for realizing thes…

Daniel McNulty and Stefan Weigert,

Quantum 10, 2051 (2026).

Maximal sets of mutually unbiased bases are useful throughout quantum physics, both in a foundational context and for applications. To date, it remains unknown if complete sets of mutually u…

Xi Lu, Yuan Liu, and Hongwei Lin,

Quantum 10, 2048 (2026).

Quantum signal processing and quantum singular value transformation are powerful tools to implement polynomial transformations of block-encoded matrices on quantum computers, and has achieve…

Gergo Pinter, Gyorgy Frank, Daniel Varjas, and Andras Palyi,

Quantum 10, 2047 (2026).

In quantum mechanics, the Schrieffer–Wolff (SW) transformation (also called quasi-degenerate perturbation theory) is known as an approximative method to reduce the dimension of the Hamiltoni…

Andrea Di Biagio, Richard Howl, Časlav Brukner, Carlo Rovelli, and Marios Christodoulou,

Quantum 10, 2046 (2026).

Locality is a central notion in modern physics, but different disciplines understand it in different ways. Quantum field theory focuses on relativistic locality, based on spacetime regions,…

Gina Warttmann, Florian Meinert, Hans Peter Büchler, and Sebastian Weber,

Quantum 10, 2045 (2026).

We present a method to suppress crosstalk from implementing controlled-Z gates via local addressing in neutral atom quantum computers. In these systems, a fraction of the laser light that is…

Shlok Nahar, Devashish Tupkary, and Norbert Lütkenhaus,

Quantum 10, 2044 (2026).

Security analyses in quantum key distribution (QKD) and other adversarial quantum tasks often assume perfect device models. However, real-world implementations often deviate from these model…

Tathagata Karmakar and Andrew N. Jordan,

Quantum 10, 2043 (2026).

The Chantasri-Dressel-Jordan (CDJ) stochastic path integral formalism (Chantasri et al. 2013 and 2015) characterizes the statistics of the readouts and the most likely conditional evolution…

Guang Hao Low and Yuan Su,

Quantum 10, 2041 (2026).

Quantum algorithms for linear systems produce the solution state $A^{-1}|b\rangle$ by querying two oracles: $O_A$ that block encodes the coefficient matrix and $O_b$ that prepares the initial stat…

Shuheng Liu, Jiajie Guo, Qiongyi He, and Matteo Fadel,

Quantum 10, 2040 (2026).

While commonly used entanglement criteria for continuous variable systems are based on quadrature measurements, here we study entanglement detection from measurements of the Wigner function.…

Aleksandrs Belovs and Stacey Jeffery,

Quantum 10, 2039 (2026).

Given an algorithm that outputs the correct answer with bounded error, say $1/3$, it is sometimes desirable to reduce this error to some arbitrarily small $\varepsilon$ – e.g., if one wants to c…

Luna Lima Keller and Daniel Jost Brod,

Quantum 10, 2038 (2026).

Quantum walks in general graphs, or more specifically scattering on graphs, encompass enough complexity to perform universal quantum computation. Any given quantum circuit can be broken down…

Jerome Wiesemann, Jan Krause, Devashish Tupkary, Norbert Lütkenhaus, Davide Rusca, and Nino Walenta,

Quantum 10, 2037 (2026).

In recent years, quantum key distribution (QKD) has evolved from a scientific research field to a commercially available security solution, supported by mathematically formulated security pr…

Siavash Mirzaei-Ghormish, Jeddy Bennett, and Ryan M. Camacho,

Quantum 10, 2035 (2026).

We present an efficient spin-photon interface for free-space vertical emission coupling. Using a dipole model, we show that our design achieves a far-field collection efficiency of 96% at th…

Giacomo Belli, Marco Mordacci, and Michele Amoretti,

Quantum 10, 2034 (2026).

In this work, a novel quantum neural network is introduced as a means to approximate any unitary evolution through the Standard Recursive Block Basis (SRBB) and is subsequently redesigned wi…

Tim Chan,

Quantum 10, 2033 (2026).

We design Snowflake, a quantum error correction decoder that, for the surface code under circuit-level noise, is roughly 25% more accurate than the Union-Find decoder, with a better mean run…

Maximilian Lutz, Lorenzo Piroli, Georgios Styliaris, and J. Ignacio Cirac,

Quantum 10, 2032 (2026).

We propose applying the adiabatic algorithm to prepare high-energy eigenstates of integrable models on a quantum computer. We first review the standard adiabatic algorithm to prepare ground…

Paul-Louis Etienney, Rémi Robin, and Pierre Rouchon,

Quantum 10, 2031 (2026).

We are interested in the simulation of open quantum systems governed by the Lindblad master equation in an infinite-dimensional Hilbert space. To simulate the solution of this equation, the…

James Mills and Rawad Mezher,

Quantum 10, 2030 (2026).

Photon loss rates set an effective upper limit on the size of computations that can be run on current linear optical quantum devices. We present a family of techniques designed to mitigate t…

Matthew Ding, Robbie King, Bobak T. Kiani, and Eric R. Anschuetz,

Quantum 10, 2029 (2026).

Finding the ground state of strongly-interacting fermionic systems is often the prerequisite for fully understanding both quantum chemistry and condensed matter systems. The Sachdev–Ye–Kitae…

Miguel Murça, Paul K. Faehrmann, and Yasser Omar,

Quantum 10, 2028 (2026).

We introduce and investigate a data access model $\textit{(approximate sample and query)}$ that is satisfiable by the preparation and measurement of block encoded states, as well as in context…

Byeongseon Go, Changhun Oh, and Hyunseok Jeong,

Quantum 10, 2026 (2026).

Boson Sampling, a computational task believed to be classically hard to simulate, is expected to hold promise for demonstrating quantum computational advantage using near-term quantum device…

Lorenzo Laneve,

Quantum 10, 2025 (2026).

Quantum signal processing (QSP) and quantum singular value transformation (QSVT), have emerged as unifying frameworks in the context of quantum algorithm design. These techniques allow to ca…

Takeru Utsumi and Yoshifumi Nakata,

Quantum 10, 2024 (2026).

Reliably transmitting quantum information via a noisy quantum channel is a central challenge in quantum information science. While constructing a decoder is crucial to this goal, little was…

Daniel J. Spencer, Andrew Tanggara, Tobias Haug, Derek Khu, and Kishor Bharti,

Quantum 10, 2023 (2026).

Qudits offer significant advantages over qubit-based architectures, including more efficient gate compilation, reduced resource requirements, improved error-correction primitives, and enhanc…

Chris Camaño, Ethan N. Epperly, and Joel A. Tropp,

Quantum 10, 2022 (2026).

Tensor networks like matrix product states (MPSs) and matrix product operators (MPOs) are powerful tools for representing exponentially large states and operators, with applications in quant…

Reinis Irmejs, Mari Carmen Bañuls, and J. Ignacio Cirac,

Quantum 10, 2018 (2026).

We investigate the performance of an adiabatic evolution protocol when initialized from a Gibbs state at finite temperature. Specifically, we identify the diagonality of the final state in t…

Naga Dileep Varikuti, Soumik Bandyopadhyay, and Philipp Hauke,

Quantum 10, 2017 (2026).

Non-stabilizerness, alongside entanglement, is a crucial ingredient for fault-tolerant quantum computation and achieving a genuine quantum advantage. Despite recent progress, a complete unde…

James Moran, Spiros Kechrimparis, and Hyukjoon Kwon,

Quantum 10, 2016 (2026).

Quantum state discrimination plays a central role in quantum information and communication. For the discrimination of optical quantum states, the two most widely adopted measurement techniqu…

Soumyabrata Hazra, Debashis Saha, Anubhav Chaturvedi, Subhankar Bera, and A. S. Majumdar,

Quantum 10, 2015 (2026).

Finding a set of empirical criteria fulfilled by any theory satisfying the generalized notion of noncontextuality is a challenging task of both operational and foundational importance. This…

Cheng-Ju Lin, Hrant Gharibyan, and Vincent P. Su,

Quantum 10, 2014 (2026).

We use Pauli Path simulation to variationally obtain parametrized circuits for preparing ground states of various quantum many-body Hamiltonians. These include the quantum Ising model in one…

Ben T. McDonough, Claudio Chamon, Justin H. Wilson, and Thomas Iadecola,

Quantum 10, 2012 (2026).

Universal features of chaotic quantum dynamics underlie our understanding of thermalization in closed quantum systems and the complexity of quantum computations. Reversible automaton circuit…

Yunting Li and Huangjun Zhu,

Quantum 10, 2011 (2026).

Efficient verification of multipartite quantum states is crucial to many applications in quantum information processing. By virtue of Schmidt decomposition and mutually unbiased bases, here…

Nicholas LaRacuente,

Quantum 10, 2010 (2026).

States of open quantum systems often decay continuously under environmental interactions. Quantum Markov semigroups model such processes in dissipative environments. It is known that finite-…

Ágoston Kaposi, Zoltán Kolarovszki, Adrian Solymos, and Zoltán Zimborás,

Quantum 10, 2008 (2026).

Unitary designs are essential tools in several quantum information protocols. Similarly to other design concepts, unitary designs are mainly used to facilitate averaging over a relevant spac…

Asad Raza, Jens Eisert, and Alex B. Grilo,

Quantum 10, 2004 (2026).

The QMA-completeness of the local Hamiltonian problem is a landmark result of the field of Hamiltonian complexity that studies the computational complexity of problems in quantum many-body p…

David Layden, Bradley Mitchell, and Karthik Siva,

Quantum 10, 2003 (2026).

Quantum error mitigation techniques mimic noiseless quantum circuits by running several related noisy circuits and combining their outputs in particular ways. How well such techniques work i…

Hemant Sharma, Kenneth Goodenough, Johannes Borregaard, Filip Rozpędek, and Jonas Helsen,

Quantum 10, 2001 (2026).

Graph states are a powerful class of entangled states with numerous applications in quantum communication and quantum computation. Local Clifford (LC) operations that map one graph state to…

Anthony Leverrier,

Quantum 10, 2000 (2026).

While 2-level systems, aka qubits, are a natural choice to perform a logical quantum computation, the situation is less clear at the physical level. Encoding information in higher-dimensiona…

Yiyuan Chen, Jonas Helsen, and Maris Ozols,

Quantum 10, 1999 (2026).

The Sachdev–Ye–Kitaev (SYK) model is a prominent model of strongly interacting fermions that serves as a toy model of quantum gravity and black hole physics. In this work, we study the Trott…

Dylan Laplace Mermoud, Andrea Simonetto, and Sourour Elloumi,

Quantum 10, 1998 (2026).

We present a quantum variational algorithm based on a novel circuit that generates all permutations that can be spanned by one- and two-qubits permutation gates. The construction of the circ…

Gabrielle Tournaire, Marvin Schwiering, Robert Raussendorf, and Sven Bachmann,

Quantum 10, 1997 (2026).

We describe an efficient, fully fault-tolerant implementation of Measurement-Based Quantum Computation (MBQC) in the 3D cluster state. The two key novelties are (i) the introduction of a lat…

Hochang Lee, Kyung Chul Jeong, and Panjin Kim,

Quantum 10, 1996 (2026).

This work shows that minimizing the depth of a quantum circuit composed of commuting operations reduces to a vertex coloring problem on an appropriately constructed graph, where gates corres…

Shuheng Liu, Qiongyi He, Marcus Huber, and Giuseppe Vitagliano,

Quantum 10, 1995 (2026).

Characterizing entanglement of systems composed of multiple particles is a very complex problem that is attracting increasing attention across different disciplines related to quantum physic…

Yize Sun, Zixin Wu, Volker Tresp, and Yunpu Ma,

Quantum 10, 1994 (2026).

Unsupervised representation learning presents new opportunities for advancing Quantum Architecture Search (QAS) on Noisy Intermediate-Scale Quantum (NISQ) devices. QAS is designed to optimiz…

Guangze Chen and Anton Frisk Kockum,

Quantum 10, 1992 (2026).

Quantum computation and quantum simulation require a versatile gate set to optimize circuit compilation for practical applications. However, existing platforms are often limited to specific…

Antonis Delakouras, Georgios Doultsinos, and David Petrosyan,

Quantum 10, 1990 (2026).

We propose an efficient protocol to realize multi-qubit gates in arrays of neutral atoms. The atoms encode qubits in the long-lived hyperfine sublevels of the ground electronic state. To rea…

Prem Nigam Kar, David E. Roberson, Tim Seppelt, and Peter Zeman,

Quantum 10, 1989 (2026).

Mančinska and Roberson [FOCS'20] showed that two graphs are quantum isomorphic if and only if they admit the same number of homomorphisms from any planar graph. Atserias et al. [JCTB'19] pro…

Ties-Albrecht Ohst, Shijun Zhang, Hai Chau Nguyen, Martin Plávala, and Marco Túlio Quintino,

Quantum 10, 1988 (2026).

Quantum memories are a crucial precondition in many protocols for processing quantum information. A fundamental problem that illustrates this statement is given by the task of channel discri…

Felix Fischer, Daniel Burgarth, and Davide Lonigro,

Quantum 10, 1985 (2026).

When numerically simulating the unitary time evolution of an infinite-dimensional quantum system, one is usually led to treat the Hamiltonian $H$ as an "infinite-dimensional matrix" by express…

Felix Burt, Kuan-Cheng Chen, and Kin K. Leung,

Quantum 10, 1984 (2026).

Executing quantum algorithms over distributed quantum systems requires quantum circuits to be divided into sub-circuits which communicate via entanglement-based teleportation. Naively mappin…

Zeno Bacciconi, Giulia Piccitto, Alessandro Maria Verga, Giuseppe Falci, Elisabetta Paladino, and Giuliano Chiriacò,

Quantum 10, 1983 (2026).

We study the properties of photons in a cryogenic cavity, made by cryo-cooled mirrors surrounded by a room temperature environment. We model such a system as a multimode cavity coupled to tw…

Martin Štefaňák, Václav Potoček, İskender Yalçınkaya, Aurél Gábris, and Igor Jex,

Quantum 10, 1982 (2026).

Interplay between quantum interference and classical randomness can enhance performance of various quantum information tasks. In the present paper we analyze recurrence phenomena in the disc…

Joel Rajakumar and James D. Watson,

Quantum 10, 1981 (2026).

Sampling from Gibbs states – states corresponding to system in thermal equilibrium – has recently been shown to be a task for which quantum computers are expected to achieve super-polynomial…

Andreas Bluhm, Matthias C. Caro, and Aadil Oufkir,

Quantum 10, 1979 (2026).

Locality is a fundamental feature of many physical time evolutions. Assumptions on locality and related structural properties also underlie recently proposed procedures for learning an unkno…

Konrad Szymański, Lina Vandré, and Otfried Gühne,

Quantum 10, 1977 (2026).

Cluster states and graph states in general offer a useful model of the stabilizer formalism and a path toward the development of measurement-based quantum computation. Their defining structu…

Eric R. Anschuetz and Xun Gao,

Quantum 10, 1976 (2026).

Recent theoretical results in quantum machine learning have demonstrated a general trade-off between the expressive power of quantum neural networks (QNNs) and their trainability; as a corol…

Jonathan Conrad, Jens Eisert, and Steven T. Flammia,

Quantum 10, 1973 (2026).

We consider the task of performing shadow tomography of a logical subsystem defined via the Gottesman–Kitaev–Preskill (GKP) error correcting code. Our protocol does not require the input s…

Giovanni de Felice, Boldizsár Poór, Cole Comfort, Lia Yeh, Mateusz Kupper, William Cashman, and Bob Coecke,

Quantum 10, 1972 (2026).

Photonic systems offer a promising platform for interconnecting quantum processors and enabling scalable, networked architectures. Designing and verifying such architectures requires a unifi…

Daniele Lamberto, Gabriele Orlando, and Salvatore Savasta,

Quantum 10, 1970 (2026).

The occurrence of a second-order quantum phase transition in the Dicke model is a well-established feature. On the contrary, a comprehensive understanding of the corresponding open system, p…

Caroline L. Jones, Stefan L. Ludescher, Albert Aloy, and Markus P. Müller,

Quantum 10, 1966 (2026).

We demonstrate a fundamental relation between the structures of physical space and of quantum theory: the set of quantum correlations in a rotational prepare-and-measure scenario can be deri…

Adina Goldberg,

Quantum 10, 1964 (2026).

In the flavour of categorical quantum mechanics, we extend nonlocal games to allow quantum questions and answers, using quantum sets (special symmetric dagger Frobenius algebras) and the qua…

Sridhar Prabhu, Vladimir Kremenetski, Saeed A. Khan, Ryotatsu Yanagimoto, and Peter L. McMahon,

Quantum 10, 1963 (2026).

Conventionally in quantum sensing, the goal is to estimate one or more unknown parameters that are assumed to be deterministic – that is, they do not change between shots of the quantum-sens…

Matthias Salzger and John H. Selby,

Quantum 10, 1959 (2026).

There has been a recent surge of interest within the field of quantum foundations regarding incorporating ideas from general relativity and quantum gravity. However, many quantum information…