Papers
Live trends in quantum computing research, updated daily from arXiv.
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Sharp State-Independent Uncertainty Relations for Multipartite systems
Yiling Wang, Naihuan Jing·Aug 23, 2026
Uncertainty relations constrain the fluctuations of incompatible observables, but most familiar bounds depend on the quantum state. State-independent uncertainty relations instead ask how much fluctuation remains unavoidable for every quantum state. ...
On the Four-Loop Higgs--Gluon Form Factor in Nonlocal Quantum Field Theory
E. J. Thompson·Aug 23, 2026
In particle physics the virtual N$^3$LO contribution to gluon-fusion Higgs production in the Standard Model requires four-loop multi-scale QCD amplitudes that in dimensional regularization are dominated by singular integral reduction and difficult ma...
Robust Quantum Key Distribution Arbitrarily Close to Local Correlations
Hari Krishnan SV, Andreas Winter·Aug 23, 2026
Recently, Wooltorton et al. [Phys. Rev. Lett. 132, 210802 (2024)] and Farkas [Phys. Rev. Lett. 132, 210803 (2024)] have exhibited the mismatch between Bell inequality violations and their cryptographic application in device-independent quantum key di...
Characterization of Chaotic Evolution in Quantum Systems Induced by Random Hermitian Matrices
Arkady Kurnosov, Sven Gnutzmann, Uzy Smilansky·Aug 23, 2026
In a recent paper, a semiclassical Lyapunov exponent associated with a quantum Hamiltonian represented by a finite-dimensional Hermitian matrix was defined and placed on a mathematical foundation. The Lyapunov exponent characterizes the early stages ...
Fractality of the Schrödinger Density for Rough Data
Masoud Ataei·Aug 23, 2026
The observable of the Talbot effect is the intensity behind the grating: the density of the evolving field, not the field itself. Its fractality was previously known only for step data with rational jumps. We prove the general case. For arbitrary rea...
Hydrogen Molecular Ion and Molecule in Classical Electrodynamics with Classical Zero-Point Radiation
Timothy H. Boyer·Aug 23, 2026
The hydrogen molecular ion and the hydrogen molecule are treated in an approximate calculation based on classical electrodynamics which includes classical zero-point radiation. It is found within the classical theory that a molecular ion is less-well...
Estimating the Fisher information from ARPES in general two-band models
Gunnar F Lange·Aug 23, 2026
The Quantum Fisher information is frequently studied in the fields of quantum sensing and quantum metrology, as it specifies the sensitivity of a sensor through the Crámer-Rao bound, and in condensed matter physics where it relates to the quantum met...
Quantum-Inspired Hybrid Neural Networks for Neural Decoding: A Controlled Ablation Study of Learnable Quantum Sidecar Integration
Diana Legziel Levy, Menachem Finkelstein, Peter Chin +2 more·Aug 23, 2026
We study parameterized quantum circuits (PQCs) integrated as residual sidecar modules within a ResNet-50 backbone for 31-class neural population decoding---imagined handwriting classification from multi-neuron spike rasters. Under strictly controlled...
Sample-Query Interconversion of Block Encoding of Unknown Quantum States
Manaki Arihara, Mio Murao·Aug 23, 2026
Block encoding embeds a matrix as a sub-block of a unitary matrix and serves as a fundamental input model for quantum algorithms based on quantum singular value transformation, enabling polynomial transformations of matrices encoded in unitary operat...
Error Propagation Theory for Variational Non-Markovian Open Quantum Dynamics
Long Cao, Daochi Zhang, Yao Wang +4 more·Aug 23, 2026
Variational approaches based on neural quantum states and physics-informed neural networks provide powerful paradigms for simulating non-Markovian open quantum dynamics. However, extending these methods into the strongly non-Markovian regime reveals ...
Inclusion-Minimal local indistinguishability: a weak form of nonlocality
Mao-Sheng Li, Zong-Xing Xiong, Zhu-Jun Zheng +1 more·Aug 23, 2026
Local discrimination of quantum states is a fundamental task in distributed quantum information processing and underlies applications such as quantum communication, data hiding, and secret sharing. Here we investigate a weak form of local indistingui...
Laughlin quasihole geometry from a single snapshot ensemble
Kaushlendra Kumar·Aug 23, 2026
Can a probability distribution measured in one basis determine complex quantum geometry? The answer is affirmative for a lattice Laughlin quasihole. The exact occupation law at one generic reference position, together with the known analytic quasihol...
Optimal Nonparametric Estimation of Phase-Space Representations for Non-Gaussian Continuous Variable Quantum States
Vladimir A. Orlov, Liubov A. Markovich·Aug 23, 2026
We further develop Kernel Quantum State Estimation (KQSE), a fully data-driven nonparametric method for continuous variable quantum state reconstruction and characterization, introduced in our recent work and rooted in nonparametric kernel density es...
Precision-Aware Variable Bit Processing Elements for Hardware-Efficient Systolic Array Designs
Dantu Nandini Devi, Madhav Rao·Aug 23, 2026
Systolic arrays (SAs) have emerged as prominent hardware accelerators for matrix operations in deep learning, while floating point number formats enable precision control across computational domains. This research investigates approximate computing ...
Spinning giant optomechanical cavity with nonreciprocal self-interference
Yao-Tong Chen·Aug 23, 2026
We study a spinning optomechanical cavity that is coupled to a meandering waveguide at multiple spatially separated points, forming a giant-cavity configuration. The resulting self-interference makes the effective optical driving, linewidth, and freq...
Relaxation-Rectified Anti-Jaynes-Cummings Cascades for Autonomous Fock-State Stabilization
Yan Liu, Jiahua Li·Aug 23, 2026
We propose an autonomous scheme for stabilizing prescribed Fock states in a Kerr cavity by rectifying anti-Jaynes--Cummings interactions with auxiliary-qubit relaxation. Full Lindblad simulations demonstrate steady states dominated by the Fock states...
Engineering exact mobility edges in quasiperiodic Aharonov-Bohm chains
Hai-Ying Cui, Yi-Cong Yu, Xiaoming Cai·Aug 23, 2026
We investigate localization phenomena and exact mobility edges in a quasiperiodic Aharonov-Bohm chain, where the 1D canonical diagonal and off-diagonal Aubry-André-Harper models are laterally coupled to an auxiliary sublattice threaded by a synthetic...
STAR-GS: Truthful and Visibility-Aware Resource Scheduling for Ground Station as a Service
Zhiying Wang, Xiaojian Wang, Huayue Gu +2 more·Aug 23, 2026
The rapid growth of Low Earth Orbit satellite constellations has created increasing demand for efficient and scalable downlink services. Ground Station as a Service (GSaaS) provides an on-demand access model for satellite operators, but commercial GS...
Lessons from the Hardware Hacking Competitions: Verification Techniques, Findings, and Insights
Sudipta Paria, Aritra Dasgupta, Raghul Saravanan +3 more·Aug 23, 2026
Hardware hacking competitions have emerged as practical platforms for evaluating security weaknesses in complex System-on-Chip (SoC) designs while promoting security-aware verification and tool development. This paper presents a systematic study of S...
Bloch states of an infinite one-dimensional lattice under transverse electric field
Anand Aruna Kumar·Aug 23, 2026
We consider an effectively one-dimensional periodic atomic chain subjected to a weak static electric field transverse to the chain axis. The intrinsic lattice is represented in reciprocal space by a harmonically weighted periodic pseudopotential, whi...