Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Symmetry-Based Quantum Codes Beyond the Pauli Group
Zachary P. Bradshaw, Margarite L. LaBorde, Dillon Montero·Dec 8, 2025
Typical stabilizer codes aim to solve the general problem of fault-tolerance without regard for the structure of a specific system. By incorporating a broader representation-theoretic perspective, we provide a generalized framework that allows the co...
Beam search decoder for quantum LDPC codes
Min Ye, Dave Wecker, Nicolas Delfosse·Dec 8, 2025
We propose a decoder for quantum low density parity check (LDPC) codes based on a beam search heuristic guided by belief propagation (BP). Our beam search decoder applies to all quantum LDPC codes and achieves different speed-accuracy tradeoffs by tu...
Timing quantum emission: coherence, superradiance, and entanglement in order
Nur Fadhillah Binti Rahimi, Norman Koo Tze Wei, Daniel Schumayer +3 more·Dec 8, 2025
We investigate the short-term temporal dynamics of superradiance in closely spaced quantum emitters. Building on Dicke's 1954 framework, we analyze the sequential emergence of coherence, superradiance, and entanglement, revealing a distinct temporal ...
The uncharted space of non-Hermitian solutions to the Hartree-Fock and Kohn-Sham equations
Matthias Ernzerhof, Mohamed Loutis, Pierre-Olivier Roy +1 more·Dec 7, 2025
Many problems in physical chemistry involve systems that are coupled to an environment, such as a molecule interacting with an adjacent surface, possibly resulting in meta-stable molecular states where electron density is transferred to the surface. ...
From Quantum Chaos to Classical Chaos via Gain-Induced Measurement Dynamics in a Photon Gas
Violetta Sharoglazova, Marius Puplauskis, Lotte Hof +1 more·Dec 7, 2025
How classical chaos emerges from quantum mechanics remains a central open question, as the unitary evolution of isolated quantum systems forbids exponential sensitivity to initial conditions. A key insight is that this quantum-classical link is provi...
The Fine-Structure Constant as a Scaled Quantity
Harry Sticker·Dec 7, 2025
The fine-structure constant alpha approximately 1/137 is traditionally regarded as a fundamental dimensionless parameter. I argue instead that alpha is a scaled quantity that arises only where the structural scales contributed by classical electromag...
Statistical structural properties of many-body chaotic eigenfunctions and applications
Wen-ge Wang, Qingchen Li, Jiaozi Wang +1 more·Dec 7, 2025
In this paper, we employ a semiperturbative theory to study the statistical structural properties of energy eigenfunctions (EFs) in many-body quantum chaotic systems consisting of a central system coupled to an environment. Under certain assumptions,...
Bohmian Trajectories Within Hilbert Space Based Quantum Mechanics. Solution of the Measurement Problem
Tulsi Dass·Dec 7, 2025
de Broglie-Bohm theory (dBBT), treating quantum particles as point objects moving along well defined (Bohmian) trajectories, offers an appealing solution of the measurement problem in quantum mechanics; it has, however, problems relating to spin, rel...
Analytic Theory and cQED Implementation of a Two-Qubit Refrigerator: Sub-100 mK Cavity Cooling from a 4 K Bath
Daryoosh Vashaee, Jahanfar Abouie·Dec 7, 2025
We develop a theoretical framework for cooling a microwave cavity mode using a Poisson stream of internally correlated pairs of two-level systems and analyze its performance under realistic dissipation. Starting from a Lindblad model of a phonon-teth...
On possible extensions of quantum mechanics
Yiruo Lin·Dec 7, 2025
It was argued [1] that there can be no extension of quantum mechanics with improved predictive power on a measurement freely chosen, independently of any event that is not in its future light cone. The assumption of measurement choice was criticized ...
Suppressing Fast Dipolar Noise in Solid-State Spin Qubits
Jaime García Oliván, Ainitze Biteri-Uribarren, Oliver T. Whaites +1 more·Dec 7, 2025
Spin qubit coherence is a fundamental resource for the realization of quantum technologies. For solid-state platforms, spin decoherence is dominated by the magneto-active environment in the lattice, limiting their applicability. While standard dynami...
Optimal Transport of a Free Quantum Particle and its Shape Space Interpretation
Bernadette Lessel·Dec 7, 2025
A solution of the free Schrödinger equation is investigated by means of Optimal transport. The curve of probability measures $μ_t$ this solution defines is shown to be an absolutely continuous curve in the Wasserstein space $W_2(\mathbb{R}^3)$. The o...
Single Flux Quantum Circuit Operation at Millikelvin Temperatures
Jason Walter, Adam C. Weis, Kan-Ting Tsai +6 more·Dec 7, 2025
As quantum computing processors increase in size, there is growing interest in developing cryogenic electronics to overcome significant challenges to system scaling. Single flux-quantum (SFQ) circuits offer a promising alternative to remote, bulky, a...
Physics-Informed Generative Machine Learning for Accelerated Quantum-centric Supercomputing
Chayan Patra, Dibyendu Mondal, Sonaldeep Halder +4 more·Dec 7, 2025
Quantum centric supercomputing (QCSC) framework, such as sample-based quantum diagonalization (SQD) holds immense promise toward achieving practical quantum utility to solve challenging problems. QCSC leverages quantum computers to perform the classi...
Multiple re-entrant topological windows induced by generalized Bernoulli disorder
Ruijiang Ji, Yunbo Zhang, Shu Chen +1 more·Dec 7, 2025
We investigate re-entrant topological behavior in a one-dimensional Su-Schrieffer-Heeger model with generalized Bernoulli-type disorder in the intradimer hopping amplitudes. We show that varying the values and probabilities of the disorder distributi...
Quantum-catalysis-enhanced extractable energy in a qubit quantum battery
Shun-Cai Zhao·Dec 7, 2025
In realistic open-system environments, decoherence and dissipation naturally drive quantum batteries toward passive states, thereby limiting their maximum extractable work (ergotropy). While quantum catalysis has been proposed to mitigate this degrad...
Maximum Independent Set via Probabilistic and Quantum Cellular Automata
Federico Dell'Anna, Matteo Grotti, Vito Giardinelli·Dec 7, 2025
We study probabilistic cellular automata (PCA) and quantum cellular automata (QCA) as frameworks for solving the Maximum Independent Set (MIS) problem. We first introduce a synchronous PCA whose dynamics drives the system toward the manifold of maxim...
Quantum Mpemba effect in long-ranged U(1)-symmetric random circuits
Han-Ze Li, Ching Hua Lee, Shuo Liu +2 more·Dec 7, 2025
The Mpemba effect, where a state prepared farther from equilibrium relaxes faster to equilibrium than one prepared closer, has a quantum counterpart where relaxation is resolved by conserved charge. However, the fate of the quantum Mpemba effect in s...
Real-Time Dynamics in Two Dimensions with Tensor Network States via Time-Dependent Variational Monte Carlo
Yantao Wu, Jannes Nys·Dec 7, 2025
Reliably simulating two-dimensional many-body quantum dynamics with projected entangled pair states (PEPS) has long been a difficult challenge. In this work, we overcome this barrier for low-energy quantum dynamics by developing a stable and efficien...
Enhancing ground-state interaction strength of neutral atoms via Floquet stroboscopic dynamics
Y. Wei, M. Artoni, G. C. La Rocca +2 more·Dec 7, 2025
Neutral atom systems are promising platforms for quantum simulation and computation, owing to their long coherence times. However, their intrinsically weak ground-state interactions pose a major limitation to the advancement of scalable quantum simul...