Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Digital Coherent-State QRNG Using System-Jitter Entropy via Random Permutation
Randy Kuang·Dec 11, 2025
We present a fully digital framework that replicates the statistical behavior of coherent-state quantum random number generation (QRNG) by harnessing system timing jitter through random permutation processes. Our approach transforms computational tim...
Universal and non-universal facets of quantum critical phenomena unveiled along the Schmidt decomposition theorem
Samuel M. Soares, Lucas Squillante, Henrique S. Lima +2 more·Dec 11, 2025
Critical phenomena have been extensively investigated both theoretically and experimentally in many fields, such as condensed matter physics, biology, e.g., brain criticality, and cosmology. In particular, the behaviour of response functions right at...
Microgravity and Near-Absolute Zero: A New Frontier in Quantum Computing Hardware
Denis Saklakov·Dec 11, 2025
Quantum computing qubits are notoriously fragile, requiring extreme isolation from environmental disturbances. This paper advances the hypothesis that a combination of microgravity and ultra-low temperature (near absolute zero) provides an almost "id...
Topological Order and Non-Hermitian Skin Effect in Generalized Ideal Chern Bands
Jiong-Hao Wang, Christopher Ekman, Raul Perea-Causin +2 more·Dec 11, 2025
Fractionalization in ideal Chern bands and non-Hermitian topological physics are two active but so far separate research directions. Merging these, we generalize the notion of ideal Chern bands to the non-Hermitian realm and uncover several striking ...
Deterministic Equations for Feedback Control of Open Quantum Systems III: Full counting statistics for jump-based feedback
Alberto J. B. Rosal, Guilherme Fiusa, Patrick P. Potts +1 more·Dec 11, 2025
In this work, we consider a general feedback protocol based on quantum-jump detections, where the last detected jump channel is stored in a memory and subsequently used to implement a feedback action, such as modifying the system Hamiltonian conditio...
Q-BAR: Blogger Anomaly Recognition via Quantum-enhanced Manifold Learning
Maida Wang, Panyun Jiang·Dec 11, 2025
In recommendation-driven online media, creators increasingly suffer from semantic mutation, where malicious secondary edits preserve visual fidelity while altering the intended meaning. Detecting these mutations requires modeling a creator's unique s...
Asymptotic-freedom and massive glueballs in a qubit-regularized SU(2) gauge theory
Rui Xian Siew, Shailesh Chandrasekharan, Tanmoy Bhattacharya·Dec 11, 2025
We argue that a simple qubit-regularized $\mathrm{SU}(2)$ lattice gauge theory (LGT) on a plaquette chain serves as a pseudo-one-dimensional toy model for Yang-Mills (YM) theory in three spatial dimensions. We map the chain Hamiltonian to the Transve...
Correlation and Entanglement partners in Gaussian systems
Ivan Agullo, Eduardo Martín-Martínez, Sergi Nadal-Gisbert +2 more·Dec 11, 2025
We introduce a framework to identify where the total correlations and entanglement with a chosen degree of freedom reside within the rest of a system, in the context of bosonic many-body Gaussian quantum systems. Our results are organized into two ma...
Crystalline Spectral Form Factors
Dmitrii A. Trunin, David A. Huse·Dec 11, 2025
We investigate crystalline-like behavior of the spectral form factor (SFF) in unitary quantum systems with extremely strong eigenvalue repulsion. Using a low-temperature Coulomb gas as a model of repulsive eigenvalues, we derive the Debye-Waller fact...
Information-Theoretic and Operational Measures of Quantum Contextuality
Ali Can Günhan, Zafer Gedik·Dec 11, 2025
We propose an information -- theoretic framework for quantifying Kochen-Specker contextuality. Two complementary measures are introduced: the mutual information energy, a state-independent quantity inspired by Onicescu's information energy that captu...
Choi echo: dynamical irreversibility and local decoherence in quantum many-body chaos
Jose Alfredo de Leon, Miguel Gonzalez, Carlos Diaz-Mejia·Dec 11, 2025
Quantifying intrinsic irreversibility in open quantum dynamics is central to understanding decoherence and information loss in many-body systems. In this work, we introduce the Choi echo, which provides an operational interpretation of the purity of ...
Agent policies from higher-order causal functions
Matt Wilson·Dec 11, 2025
We establish a correspondence between equivalence classes of agent-state policies for deterministic POMDPs and one-input process functions (the classical-deterministic limit of higher-order quantum operations). We use this correspondence to build a b...
Noisy Quantum Learning Theory
Jordan Cotler, Weiyuan Gong, Ishaan Kannan·Dec 11, 2025
We develop a framework for learning from noisy quantum experiments in which fault-tolerant devices access uncharacterized systems through noisy couplings. Introducing the complexity class $\textsf{NBQP}$ ("noisy BQP''), we model noisy fault-tolerant ...
Andreev spin qubits bound to Josephson vortices in spin-orbit coupled planar Josephson junctions
Katharina Laubscher, Valla Fatemi, Jay D. Sau·Dec 11, 2025
We propose a variant of Andreev spin qubits (ASQs) defined in planar Josephson junctions based on spin-orbit coupled two-dimensional electron gases (2DEGs) in a weak out-of-plane magnetic field. The magnetic field induces a linear phase gradient acro...
Qubit decoherence in dissipative two-photon resonator: real-time instantons and Wigner function
V. Yu. Mylnikov, S. O. Potashin, Alex Kamenev·Dec 11, 2025
We study the quantum dynamics of a single bosonic cavity subject to two-photon driving and two-photon dissipation in the presence of finite detuning. Exploiting a hidden time-reversal symmetry, the Wigner representation and the WKB method, we introdu...
Partitioned Expansions for Approximate Tensor Network Contractions
Glen Evenbly, Johnnie Gray, Garnet Kin-Lic Chan·Dec 11, 2025
We propose a method for approximating the contraction of a tensor network by partitioning the network into a sum of computationally cheaper networks. This method, which we call a partitioned network expansion (PNE), builds upon recent work that syste...
Electronic crystals and quasicrystals in semiconductor quantum wells: an AI-powered discovery
Filippo Gaggioli, Pierre-Antoine Graham, Liang Fu·Dec 11, 2025
The homogeneous electron gas is a cornerstone of quantum condensed matter physics, providing the foundation for developing density functional theory and understanding electronic phases in semiconductors. However, theoretical understanding of strongly...
Twin-paradox and Entanglement
K. Hari, Subhajit Barman, Dawood Kothawala·Dec 11, 2025
We study the quantum version of the classical twin paradox in special relativity by replacing the twins with quantum detectors, and studying the transitions and entanglement induced by coupling them to a quantum field. We show that the \textit{change...
Rapid multi-mode trapped-ion laser cooling in a phase-stable standing wave
Zhenzhong Xing, Hamim Mahmud Rivy, Vighnesh Natarajan +3 more·Dec 11, 2025
Laser cooling is fundamental to quantum computing and metrology using atomic systems. Precise control often requires cooling atoms' motional degrees of freedom to the quantum ground state, imposing operation time and architectural limitations particu...
Hybrid quantum-classical matrix-product state and Lanczos methods for electron-phonon systems with strong electronic correlations: Application to disordered systems coupled to Einstein phonons
Heiko Georg Menzler, Suman Mondal, Fabian Heidrich-Meisner·Dec 11, 2025
We present two quantum-classical hybrid methods for simulating the time-dependence of electron-phonon systems that treat electronic correlations numerically exactly and optical-phonon degrees of freedom classically. These are a time-dependent Lanczos...