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Live trends in quantum computing research, updated daily from arXiv.
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Quantum-inspired multi-agent reinforcement learning for exploration–exploitation optimization in UAV-assisted 6G network deployment
Mazyar Taghavi, Javad Vahidi·Nov 24, 2025
This study introduces a quantum-inspired framework for optimizing the exploration–exploitation tradeoff in multi-agent reinforcement learning (MARL), applied to UAV-assisted 6G network deployment. We consider a cooperative scenario where ten intellig...
Teleportation-based quantum state tomography
Gustavo Rigolin·Nov 23, 2025
We explicitly show that the quantum teleportation protocol can be employed to completely reconstruct arbitrary two- and three-qubit density matrices. We also extend the present analysis to n-qubit density matrices. The only quantum resources needed t...
Tunable Bands in 1D Fractional Quantum Media
Brenden R. Guyette, Joshua M. Lewis, Lincoln D. Carr·Nov 23, 2025
Fractional calculus has become an essential framework in geophysics, optics, and biological systems to capture long-range correlations and anomalous transport. In this article, we extend fractional calculus to explore a particle in a periodic potenti...
A quantum-classical hybrid branch & bound algorithm
András Czégel, Dávid Sipos, Boglárka G. -Tóth·Nov 23, 2025
We propose a complete quantum-classical hybrid branch-and-bound algorithm (QCBB) to solve binary linear programs with equality constraints. That includes bound calculation, convergence metrics and optimality guarantee to the quantum optimization base...
Quantum machine learning for efficient reduced order modelling of turbulent flows
Han Li, Yutong Lou, Dunhui Xiao·Nov 23, 2025
Accurately predicting turbulent flows remains a central challenge in fluid dynamics due to their high dimensionality and intrinsic nonlinearity. Recent developments in quantum algorithms and machine learning offer new opportunities for overcoming the...
Neural network approximation of regularized density functionals
Mihály A. Csirik, Andre Laestadius, Mathias Oster·Nov 23, 2025
Density functional theory is one of the most efficient and widely used computational methods of quantum mechanics, especially in fields such as solid state physics and quantum chemistry. From the theoretical perspecive, its central object is the univ...
Machine Learning by Adiabatic Evolutionary Quantum System
Tomoyuki Yamakami·Nov 23, 2025
A computational model of adiabatic evolutionary quantum system (or AEQS, pronounced "eeh-ks") was introduced in [Yamakami,2022] as a sort of quantum annealing and its underlying input-driven Hamiltonians are generated quantum-algorithmically by vario...
Non-Hermitian topology in a single driven-dissipative Kerr-Cat qubit
Pei-Rong Han, Huiye Qiu, Hao-Long Zhang +3 more·Nov 23, 2025
The intriguing physical phenomena associated with exceptional points have established non-Hermitian physics as a frontier of modern research. Recent investigations have extended non-Hermitian physics into the fully quantum domain. However, existing s...
Cavity magnomechanical framework for a high-efficiency quantum battery
S. K. Singh, Ahmed A. Zahia, Jia-Xin Peng +1 more·Nov 23, 2025
We theoretically investigate a quantum battery architecture where two identical two-level atoms are charged by a cavity-magnomechanical system, which includes a microwave cavity, a magnon mode hosted in a YIG sphere, and phonon mode due to the deform...
Probabilistic Bounds on the Number of Elements to Generate Finite Nilpotent Groups and Their Applications
Ziyuan Dong, Xiang Fan, Tengxun Zhong +1 more·Nov 23, 2025
This work establishes a new probabilistic bound on the number of elements to generate finite nilpotent groups. Let $\varphi_k(G)$ denote the probability that $k$ random elements generate a finite nilpotent group $G$. For any $0 < ε< 1$, we prove that...
An Introduction to the Quantum Approximate Optimization Algorithm
Alessandro Giovagnoli·Nov 23, 2025
The Quantum Approximate Optimization Algorithm (QAOA) is a promising variational quantum algorithm introduced to tackle classically intractable combinatorial optimization problems. This tutorial offers a comprehensive, first-principles introduction t...
Attosecond-resolved quantum fluctuations of light and matter
Matan Even Tzur, Chen Mor, Noa Yaffe +10 more·Nov 23, 2025
Until recently, attosecond optical spectroscopy and quantum optics evolved along non-overlapping directions. In attosecond science, attosecond pulses have been regarded as classical waves, applied to probe electron dynamics on their natural time scal...
Nonlinear stochastic and quantum motion from Coulomb forces
Luca Ornigotti, Darren W. Moore, Radim Filip·Nov 23, 2025
Controllable nonlinear quantum interactions are a much sought after target for modern quantum technologies. They are typically difficult and costly to engineer for bespoke purposes. However controllable nonlinearities may have always been in reach vi...
Universal learning of nonlocal entropy via local correlations in non-equilibrium quantum states
Hao Liao, Xuanqin Huang, Ping Wang·Nov 23, 2025
Characterizing the nonlocal nature of quantum states is a central challenge in the practical application of large-scale quantum computation and simulation. Quantum mutual information (QMI), a fundamental nonlocal measure, plays a key role in quantify...
General Machine Learning Algorithm for Quantum Teleportation
Allison Brattley, Tomas Opatrny, Kunal K. Das·Nov 23, 2025
We present a general algorithm, based on machine learning, which can create optimal unitary operators to implement quantum teleportation in any system with well-defined set of measurements in a relevant entangled basis. We illustrate it with a collec...
Discrete Action, Graph Evolution, and the Hierarchy of Symmetries: A Rigorous Construction of Temporal Layers $C1 \to C2 \to C3 \to C4$
Medeu Abishev, Daulet Berkimbayev·Nov 23, 2025
Postulating a minimal discrete quantum of action $S=\hbar$ and a simple rule for the growth of an oriented graph, we construct a strict hierarchy of temporal layers $C N$ with discrete periods $τ_N=N\hbar/E$. Each layer is specified by its configurat...
Utilizing Circulant Structure to Optimize the Implementations of Linear Layers
Buji Xu, Xiaoming Sun·Nov 23, 2025
In this paper, we propose a novel approach for optimizing the linear layer used in symmetric cryptography. It is observed that these matrices often have circulant structure. The basic idea of this work is to utilize the property to construct a sequen...
Doublon bound states in the continuum through giant atoms
Walter Rieck, Anton Frisk Kockum, Guangze Chen·Nov 22, 2025
Bound states in the continuum (BICs) are spatially localized modes embedded in the spectrum of extended states, typically stabilized by symmetry or interference. While extensively studied in single-particle and linear systems, the many-body regime of...
Deterministic coupling of ultracold atomic lattice to a suspended photonic waveguide
J. T. Hansen, F. Gargiulo, J. B. Mathiassen +3 more·Nov 22, 2025
The deterministic control of light-matter interactions at the level of single particles and on subwavelength scales is central to quantum optics and hybrid integrated quantum technologies. However, combining cold atom research with nanophotonic devic...
Space-Optimized and Experimental Implementations of Regev's Quantum Factoring Algorithm
Wentao Yang, Bao Yan, Muxi Zheng +3 more·Nov 22, 2025
The integer factorization problem (IFP) underpins the security of RSA, yet becomes efficiently solvable on a quantum computer through Shor's algorithm. Regev's recent high-dimensional variant reduces the circuit size through lattice-based post-proces...