Quantum

Paper

Projective characterization of higher-order quantum transformations

Timothée Hoffreumon and Ognyan Oreshkov,

Quantum 10, 1978 (2026).

Transformations of transformations, also called higher-order transformations, is a natural concept in information processing, which has recently attracted significant interest in the study o…

Paper

Useful entanglement can be extracted from noisy graph states

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…

Paper

Arbitrary Polynomial Separations in Trainable Quantum Machine Learning

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…

Paper

Assessing fault-tolerant quantum advantage for $k$-SAT with structure

Martijn Brehm and Jordi Weggemans,

Quantum 10, 1975 (2026).

For many problems, quantum algorithms promise speedups over their classical counterparts. However, these results predominantly rely on asymptotic worst-case analysis, which overlooks signifi…

Paper

On the commutator scaling in Hamiltonian simulation with multi-product formulas

Kaoru Mizuta,

Quantum 10, 1974 (2026).

A multi-product formula (MPF) is a promising approach for Hamiltonian simulation efficiently both in the system size $N$ and the inverse allowable error $1/\varepsilon$ by combining Trotterizati…

Paper

Chasing shadows with Gottesman-Kitaev-Preskill codes

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…

Paper

A dataflow programming framework for linear optical distributed quantum computing

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…

Paper

The stellar decomposition of Gaussian quantum states

Arsalan Motamedi, Yuan Yao, Kasper Nielsen, Ulysse Chabaud, J. Eli Bourassa, Rafael N. Alexander, and Filippo M. Miatto,

Quantum 10, 1971 (2026).

We introduce the $\textit{stellar decomposition}$, a novel method for characterizing non-Gaussian states produced by photon-counting measurements on Gaussian states. Given an $(m+n)$-mode Gaussi…

Paper

Superradiant Quantum Phase Transition in Open Systems: System-Bath Interaction at the Critical Point

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…

Paper

Quantum algorithms for linear and non-linear fractional reaction-diffusion equations

Dong An and Konstantina Trivisa,

Quantum 10, 1969 (2026).

High-dimensional fractional reaction-diffusion equations have numerous applications in the fields of biology, chemistry, and physics, and exhibit a range of rich phenomena. While classical a…

Paper

Fault-tolerant simulation of Lattice Gauge Theories with gauge covariant codes

L. Spagnoli, A. Roggero, and N. Wiebe,

Quantum 10, 1968 (2026).

We show in this paper that a strong and easy connection exists between quantum error correction and Lattice Gauge Theories (LGT) by using the Gauge symmetry to construct an efficient error-c…

Paper

Informed Dynamic Scheduling for QLDPC Codes

Tzu-Hsuan Huang and Yeong-Luh Ueng,

Quantum 10, 1967 (2026).

Recent research has shown that syndrome-based belief propagation using layered scheduling (sLBP) can not only accelerate the convergence rate but also improve the error rate performance by b…

Paper

Theory-independent randomness generation from spatial symmetries

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…

Paper

Quantum geometric tensors from sub-bundle geometry

Marius A. Oancea, Thomas B. Mieling, and Giandomenico Palumbo,

Quantum 10, 1965 (2026).

The geometric properties of quantum states are crucial for understanding many physical phenomena in quantum mechanics, condensed matter physics, and optics. The central object describing the…

Paper

Quantum games and synchronicity

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…

Paper

Exponential advantage in quantum sensing of correlated parameters

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…

Category: Paper