Papers
Live trends in quantum computing research, updated daily from arXiv.
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Simple logical quantum computation with concatenated symplectic double codes
Noah Berthusen, Elijah Durso-Sabina·Oct 21, 2025
There have been significant recent advances in constructing theoretical and practical quantum error correcting codes that function well as quantum memories; however, performing fault-tolerant logical gates on these codes is less studied, and the prot...
Practical Use Cases of Neutral Atoms Quantum Computers
Matteo Grotti, Sara Marzella, Gabriella Bettonte +2 more·Oct 21, 2025
Quantum computing has quickly emerged as a revolutionary paradigm that holds the potential for greatly enhanced computational capability and algorithmic efficiency, in a wide range of areas. Among the various hardware platforms, neutral atom quantum ...
Source-device-independent monolithically integrated QRNG in a black box with generation rate in excess of 30 Gbit/s
Peter Seigo Kincaid, Lorenzo De Marinis, Francesco Testa +2 more·Oct 21, 2025
Quantum mechanics provides a secure means of generating random numbers, with applications in fields spanning scientific simulation to cryptography. The first source-device-independent monolithically integrated quantum random number generator is repor...
Modulated symmetries from generalized Lieb-Schultz-Mattis anomalies
Hiromi Ebisu, Bo Han, Weiguang Cao·Oct 21, 2025
Symmetries rigidly delimit the landscape of quantum matter. Recently uncovered spatially modulated symmetries, whose actions vary with position, enable excitations with restricted mobility, while Lieb-Schultz-Mattis (LSM) type anomalies impose sharp ...
Decay of uniformly rotating particles
Luciano Petruzziello, Martin B. Plenio·Oct 21, 2025
In this paper, we revisit the interpretation of the circular Unruh effect. To this aim, we rely on the principle of general covariance applied to the decay properties of non-inertial particles. Specifically, we show how the tree-level decay rate of a...
Measurement-Based Fault-Tolerant Quantum Computation on High-Connectivity Devices: A Resource-Efficient Approach toward Early FTQC
Yohei Ibe, Yutaka Hirano, Yasuo Ozu +2 more·Oct 21, 2025
We propose a measurement-based FTQC (MB-FTQC) architecture for high-connectivity platforms such as trapped ions and neutral atoms. The key idea is to use verified logical ancillas combined with Knill's error-correcting teleportation, eliminating repe...
Optimal quantum learning in proximity to universality
Moein N. Ivaki, Matias Karjula, Tapio Ala-Nissila·Oct 21, 2025
The boundary between classically simulable and computationally superior quantum systems is fundamental to identifying true quantum advantage. We investigate this within the framework of quantum reservoir computing by introducing a tunable $N$-qubit r...
An integrated neural wavefunction solver for spinful Fermi systems
Alexander Avdoshkin, Max Geier, Liang Fu·Oct 21, 2025
We present an approach to solving the ground state of Fermi systems that contain spin or other discrete degrees of freedom in addition to continuous coordinates. The approach combines a Markov chain Monte Carlo sampling for energy estimation that we ...
Renormalized dual basis for scalable simulations of 2+1D compact quantum electrodynamics
Marc Miranda-Riaza, Pierpaolo Fontana, Alessio Celi·Oct 21, 2025
The classical and quantum simulation of lattice gauge theories (LGTs) with Lie groups is hindered by the infinite-dimensional Hilbert space of gauge degrees of freedom. In a recent work [Phys. Rev. X 15, 031065 (2025)], we introduced a new truncation...
Chip-to-chip hyperentanglement distribution and entanglement purification using silicon integrated photonics
Yonghe Yu, Mujtaba Zahidy, Siyan Zhou +4 more·Oct 21, 2025
Quantum repeaters are employed in quantum communication to overcome the long-distance transmission loss of quantum states. The quantum repeater is based on various key technologies, including quantum entanglement swapping, quantum memory, and entangl...
When Abstraction Breaks Physics: Rethinking Modular Design in Quantum Software
Jianjun Zhao·Oct 21, 2025
Abstraction is a fundamental principle in classical software engineering, which enables modularity, reusability, and scalability. However, quantum programs adhere to fundamentally different semantics, such as unitarity, entanglement, the no-cloning t...
Large deviations in the many-body localization transition: The case of the random-field XXZ chain
Greivin Alfaro Miranda, Fabien Alet, Giulio Biroli +3 more·Oct 21, 2025
The effect of rare system-wide resonances in the many-body localization (MBL) transition has recently attracted significant attention. They are expected to play a prominent role in the stability of the MBL phase, prompting the development of new theo...
Grid-Partitioned MWIS Solving with Neutral Atom Quantum Computing for QUBO Problems
Soumyadip Das, Suman Kumar Roy, Rahul Rana +1 more·Oct 21, 2025
Quadratic Unconstrained Binary Optimization (QUBO) problems are prevalent in real-world applications, such as portfolio optimization, but pose significant computational challenges for large-scale instances. We propose a hybrid quantum-classical frame...
Quantum Reversibility Meets Classical Reverse Diffusion
Ryota Nasu, Gota Tanaka, Asato Tsuchiya·Oct 21, 2025
Bayes' rule connects forward and reverse processes in classical probability theory, and its quantum analogue has been discussed in terms of the Petz (transpose) map. For quantum dynamics governed by the Lindblad equation, the corresponding Petz map c...
Every Benchmark All at Once
Ana Silva, Eliska Greplova·Oct 21, 2025
As quantum technology matures, the efficient benchmarking of quantum devices remains a key challenge. Although sample-efficient, information-theoretic benchmarking techniques have recently been proposed, there is still a gap in adapting these techniq...
Macroscopic quantum phenomena and quantum computing
J. Q. You·Oct 21, 2025
This News & Views article provides a perspective on the 2025 Nobel Prize in Physics, including the groundbreaking discovery of macroscopic quantum tunneling and energy quantization in superconducting circuits, the history and causes giving rise to th...
Fingerprints of cluster-based Haldane and bound-magnon states in a spin-1 Heisenberg diamond chain
Azam Zoshki, Hamid Arian Zad, Katarina Karlova +1 more·Oct 21, 2025
We investigate magnetic and thermodynamic properties of a spin-1 Heisenberg diamond chain in a magnetic field using a combination of analytical and numerical methods including the variational approach, exact diagonalization, density-matrix renormaliz...
Parametric resonant enhancement of motional entanglement under optimal control: an analytical study
Gad Horovitz, Alexander N. Poddubny·Oct 21, 2025
We study theoretically continuous-variable entanglement between the motional degrees of freedom of optically trapped massive particles coupled via the Coulomb interaction, in the presence of a feedback control scheme. We perform a detailed analysis o...
KVASIR: A backscattering neutron spectrometer for hard condensed matter at ESS
Amalie F. Davidsen, Kristine M. L. Krighaar, Pascale P. Deen +1 more·Oct 21, 2025
We present the instrument concept for KVASIR, a backscattering indirect time-of-flight neutron spectrometer for the European Spallation Source (ESS). KVASIR will probe low lying excitations of single crystal hard condensed matter that many advanced t...
Multi-entropy from Linking in Chern-Simons Theory
Ma-Ke Yuan, Mingyi Li, Yang Zhou·Oct 21, 2025
We study the multipartite entanglement structure of quantum states prepared by the Euclidean path integral over three-manifolds with multiple torus boundaries (the so-called link states) in both Abelian and non-Abelian Chern-Simons theories. For thre...