Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
From Block Diagrams to Bloch Spheres: Graphical Quantum Circuit Simulation in LabVIEW
Murtaza Vefadar·Jan 31, 2026
As quantum computing transitions from theoretical physics to engineering applications, there is a growing need for accessible simulation tools that bridge the gap between abstract linear algebra and practical implementation. While text-based framewor...
Deterministic Zeroth-Order Mirror Descent via Vector Fields with A Posteriori Certification
Masahito Hayashi·Jan 31, 2026
We develop a deterministic zeroth-order mirror descent framework by replacing gradients with a general vector field, yielding a vector-field-driven mirror update that preserves Bregman geometry while accommodating derivative-free oracles. Our analysi...
Near-lossless method for generating thermal photon-bunched light
Xi Jie Yeo, Darren Ming Zhi Koh, Justin Yu Xiang Peh +2 more·Jan 31, 2026
Thermal light sources exhibiting photon bunching have been suggested for sensing applications that exploit timing correlations of stationary light, including range finding, clock synchronization, and non-line-of-sight imaging. However, these proposal...
L-entropy: A new genuine multipartite entanglement measure
Jaydeep Kumar Basak, Vinay Malvimat, Junggi Yoon·Jan 31, 2026
We advance ``Latent entropy" (L-entropy) as a novel measure to characterize genuine multipartite entanglement in pure states, applicable to quantum systems with both finite and infinite degrees of freedom. This measure, derived from an upper bound on...
Practical Quantum Reservoir Computing in Rydberg Atom Arrays
Dong-Sheng Liu, Qing-Xuan Jie, Chang-Ling Zou +2 more·Jan 31, 2026
Quantum reservoir computing (QRC) is a promising quantum machine learning framework for near-term quantum platforms, yet the performance of different QRC architectures under realistic constraints remains largely unexplored. Here, we provide a compara...
Geometric Optimization for Tight Entropic Uncertainty Relations
Ma-Cheng Yang, Cong-Feng Qiao·Jan 31, 2026
Entropic uncertainty relations play a fundamental role in quantum information theory. However, determining optimal (tight) entropic uncertainty relations for general observables remains a formidable challenge and has so far been achieved only in a fe...
Entanglement-Dependent Error Bounds for Hamiltonian Simulation
Prateek P. Kulkarni·Jan 31, 2026
We establish tight connections between entanglement entropy and the approximation error in Trotter-Suzuki product formulas for Hamiltonian simulation. Product formulas remain the workhorse of quantum simulation on near-term devices, yet standard erro...
First-Principles Optical Descriptors and Hybrid Classical-Quantum Classification of Er-Doped CaF$_2$
David Angel Alba Bonilla, Kerem Yurtseven, Krishan Sharma +4 more·Jan 31, 2026
We present a physics-informed classical-quantum machine learning framework for discriminating pristine CaF$_2$ from Er-doped CaF$_2$ using first-principles optical descriptors. Finite Ca$_8$F$_{16}$ and Ca$_7$ErF$_{16}$ clusters were constructed from...
Ermakov-Lewis Invariants in Stationary Bohm-Madelung Quantum Mechanics
Anand Aruna Kumar·Jan 31, 2026
The Ermakov Pinney equation and its associated invariant are shown to arise naturally in stationary quantum mechanics when the Schrodinger equation is expressed in Bohm Madelung form and the Hamiltonian is diagonal and separable. Under these conditio...
Quantum Phase Recognition via Quantum Attention Mechanism
Jin-Long Chen, Xin Li, Zhang-Qi Yin·Jan 31, 2026
Quantum phase transitions in many-body systems are fundamentally characterized by complex correlation structures, which pose computational challenges for conventional methods in large systems. To address this, we propose a hybrid quantum-classical at...
Liouvillian gap closing--bound states in the continuum connection and diverse dynamics in a giant-atom waveguide QED setup
Hongwei Yu, Mingzhu Weng, Zhihai Wang +1 more·Jan 31, 2026
In open quantum systems, reduced dynamics is commonly described by a master equation, whose Liouvillian gap closing (LGC) typically signals the emergence of decoherence-free subspace. By contrast, the dynamics of the full system-environment compound ...
Single-site dissipation stabilizes a superconducting nonequilibrium steady state in a strongly correlated system
X. Z. Zhang·Jan 31, 2026
Can superconducting order be engineered as a robust attractor of open-system dynamics in strongly correlated systems? We demonstrate this possibility by proposing a minimal dissipation-engineering protocol for the particle-hole symmetric Hubbard mode...
A Conceptual Hybrid Framework for Post-Quantum Security: Integrating BB84 QKD, AES, and Bio-inspired Mechanisms
Md. Ismiel Hossen Abir·Jan 31, 2026
Quantum computing is a significant risk to classical cryptographic, especially RSA, which depends on the difficulty of factoring large numbers. Classical factorization methods, such as Trial Division and Pollard's Rho, are inefficient for large keys,...
Dynamical witnesses and universal behavior across chaos and non-ergodicity in the tilted Bose-Hubbard model
Carlos Diaz-Mejia, Sergio Lerma-Hernandez, Jorge G. Hirsch·Jan 30, 2026
Quantum chaos in isolated quantum systems is intimately linked to thermalization and the rapid relaxation of observables. Although the spectral properties of the chaotic phase in the tilted Bose-Hubbard model have been well characterized, the corresp...
Path integrals and deformation quantization:the fermionic case
Anuar Kafuri·Jan 30, 2026
This thesis addresses a fundamental problem in deformation quantization: the difficulty of calculating the star-exponential, the symbol of the evolution operator, due to convergence issues. Inspired by the formalism that connects the star-exponential...
Fundamental Limits of Large Momentum Transfer in Optical Lattices
Ashkan Alibabaei, Patrik Mönkeberg, Florian Fitzek +4 more·Jan 30, 2026
Large-momentum-transfer techniques are instrumental for the next generation of atom interferometers as they significantly improve their sensitivity. State-of-the-art implementations rely on elastic scattering processes from optical lattices such as B...
Quantum Generator Kernels
Philipp Altmann, Maximilian Mansky, Maximilian Zorn +2 more·Jan 30, 2026
Quantum kernel methods offer significant theoretical benefits by rendering classically inseparable features separable in quantum space. Yet, the practical application of Quantum Machine Learning (QML), currently constrained by the limitations of Nois...
Wave-like amplification of near-threshold two-particle reactions: from muon-catalyzed fusion to $Λ\barΛ$ production at $e^-e^+$ annihilation
Vladimir S. Melezhik·Jan 30, 2026
A simple model is proposed to explain the recently found wave-like enhancement of the $Λ\barΛ$ pair production near the threshold at the $e^-e^+$ annihilation, which allows extracting model-independent scattering parameters and spectral information f...
A room-temperature cavity-magnonic source of correlated microwave pairs
Qiuyuan Wang, Aravind Karthigeyan, Chung-Tao Chou +1 more·Jan 30, 2026
Correlated microwave photon sources are key enablers for technologies in quantum-limited sensing, signal amplification and communication, but the reliance on millikelvin operating temperature limits their scalability for broader applications. Here, a...
Remarks on Dirac-Bergmann algorithm, Dirac's conjecture and the extended Hamiltonian
Kirill Russkov·Jan 30, 2026
The Dirac-Bergmann algorithm for the Hamiltonian analysis of constrained systems is a nice and powerful tool, widely used for quantization and non-perturbative counting of degrees of freedom. However, certain aspects of its application to systems wit...