Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Active tuning of ENZ resonances in meta-antenna through phase modulation of optical pulse
Elif Ozturk, Hira Asif, Mehmet Gunay +2 more·Oct 21, 2025
Plasmonic nanoantennas offer new avenues to manipulate the propagation of light in materials due to their near field enhancement and ultrafast response time. Here we investigate the epsilon-near-zero (ENZ) response in an L-shaped nanoantenna structur...
Simulating high-accuracy nuclear motion Hamiltonians using discrete variable representation and Walsh-Hadamard QROM on fault-tolerant quantum computers
Michał Szczepanik, Ákos Nagy, Emil Żak·Oct 21, 2025
We present a quantum algorithm for simulating rovibrational Hamiltonians on fault-tolerant quantum computers. The method integrates exact curvilinear kinetic energy operators and general-form potential energy surfaces expressed in a hybrid finite-bas...
Colloquium: Quantum optics of intense light--matter interaction
P. Stammer, J. Rivera-Dean, P. Tzallas +2 more·Oct 21, 2025
Intense light-matter interaction largely relies on the use of high-power light sources, creating fields comparable to, or even stronger than, the field keeping the electrons bound in atoms. Under such conditions, the interaction induces highly nonlin...
Broadband Thermal Noise Correlations Induced by Measurement Back-Action
Jiaxing Ma, Thomas J. Clark, Vincent Dumont +1 more·Oct 21, 2025
Modern mechanical sensors increasingly measure motion with precision sufficient to resolve the fundamental thermal noise floor over a broad band. Compared to traditional sensors -- achieving this limit only near resonance -- this capability provides ...
Hierarchical Fusion Method for Scalable Quantum Eigenstate Preparation
Matthew Patkowski, Onat Ayyildiz, Matjaž Kebrič +2 more·Oct 21, 2025
Robust and efficient eigenstate preparation is a central challenge in quantum simulation. The Rodeo Algorithm (RA) offers exponential convergence to a target eigenstate but suffers from poor performance when the initial state has low overlap with the...
Two Quantum Algorithms for Nonlinear Reaction-Diffusion Equation using Chebyshev Approximation Method
Manish Kumar·Oct 21, 2025
We present two new quantum algorithms for reaction-diffusion equations that employ the truncated Chebyshev polynomial approximation. This method is employed to numerically solve the ordinary differential equation emerging from the linearization of th...
Noise-tolerant tripartite entanglement and quantum coherence via saturation effects
P. Djorwé, J. -X. Peng, S. Adbel-Khalek +1 more·Oct 21, 2025
Engineering quantum resources that survive against environmental temperature is of great interest for modern quantum technologies. However, it is a tricky task to synthetize such quantum states. Here, we propose a scheme to generate highly resilient ...
Noise-Assisted Feedback Control of Open Quantum Systems for Ground State Properties
Kasturi Ranjan Swain, Rajesh K. Malla, Adolfo del Campo·Oct 21, 2025
Intrinsic noise in pre-fault-tolerant quantum devices poses a major challenge to the reliable realization of unitary dynamics in quantum algorithms and simulations. To address this, we present a method for simulating open quantum system dynamics on a...
Symmetry-accelerated classical simulation of Clifford-dominated circuits
Giulio Camillo, Filipa C. R. Peres, Markus Heinrich +1 more·Oct 21, 2025
Classical simulation of quantum circuits plays a crucial role in validating quantum hardware and delineating the boundaries of quantum advantage. Among the most effective simulation techniques are those based on the stabilizer extent, which quantifie...
On the stabilizer complexity of Hawking radiation
Ritam Basu, Onkar Parrikar, Suprakash Paul +1 more·Oct 21, 2025
We study the complexity of Hawking radiation for an evaporating black hole from the perspective of the stabilizer theory of quantum computation. Specifically, we calculate Wigner negativity -- a magic monotone which can be interpreted as a measure of...
Repulsively Bound Hadrons in a $\mathbb{Z}_2$ Lattice Gauge Theory
Sayak Guha Roy, Vaibhav Sharma, Kaidi Xu +3 more·Oct 21, 2025
The $\mathbb{Z}_2$ lattice gauge theory is a paradigmatic model that exhibits gauge-field-mediated-confinement of pairs of particles into mesons, drawing connections to quantum chromodynamics. In the absence of any additional attractive interactions ...
Lieb-Robinson causality and non-Fermi liquids
Subham Dutta Chowdhury, Sean A. Hartnoll, Aditya Hebbar·Oct 21, 2025
Quantum mechanical lattice models with local, bounded interactions obey Lieb-Robinson causality. We show that this implies a domain of analyticity of the retarded Green's function $G^R(ω,{\bf k})$ of local lattice operators as a function of complex f...
Weight-dependent and weight-independent measures of quantum incompatibility in multiparameter estimation
Jiayu He, Gabriele Fazio, Matteo G. A. Paris·Oct 21, 2025
Multiparameter quantum estimation faces a fundamental challenge due to the inherent incompatibility of optimal measurements for different parameters, a direct consequence of quantum non-commutativity. This incompatibility is quantified by the gap bet...
Lyapunov-Aware Quantum-Inspired Reinforcement Learning for Continuous-Time Vehicle Control: A Feasibility Study
Nutkritta Kraipatthanapong, Natthaphat Thathong, Pannita Suksawas +4 more·Oct 21, 2025
This paper presents a novel Lyapunov-Based Quantum Reinforcement Learning (LQRL) framework that integrates quantum policy optimization with Lyapunov stability analysis for continuous-time vehicle control. The proposed approach combines the representa...
Surface code scaling on heavy-hex superconducting quantum processors
Arian Vezvaee, Cesar Benito, Mario Morford-Oberst +2 more·Oct 21, 2025
Demonstrating subthreshold scaling of a surface-code quantum memory on hardware whose native connectivity does not match the code remains a central challenge. We address this on IBM heavy-hex superconducting processors by co-designing the code embedd...
Vector spin polarization evolution determined in an entangled muon-fluorine system under pulsed excitation
Dipranjan Chatterjee, Benjamin M. Huddart, Hank C. H. Wu +4 more·Oct 21, 2025
A spin-polarized muon implanted into a fluoride forms a coupled F--$μ$--F complex in which the muon spin and neighbouring fluorine nuclear spins become entangled. Here we apply radio-frequency (RF) excitation to this coupled system and use the three-...
Dephasing through Bremsstrahlung emission: insights from quantum Boltzmann equation
Hassan Manshouri, Moslem Zarei·Oct 21, 2025
We investigate decoherence mechanisms in open quantum systems using quantum field theory techniques and the quantum Boltzmann equation. Specifically, we focus on decoherence through Bremsstrahlung emission, a fundamental process in quantum electrodyn...
Sharp Transitions for Subsystem Complexity
Yale Fan, Nicholas Hunter-Jones, Andreas Karch +1 more·Oct 21, 2025
The circuit complexity of time-evolved pure quantum states grows linearly in time for an exponentially long time. This behavior has been proven in certain models, is conjectured to hold for generic quantum many-body systems, and is believed to be dua...
Classical Representation for Quantum States of a Particle in $λz^{2m}$ potential
Tasko Grozdanov, Evgeni Solov'ev·Oct 21, 2025
A classical representation for quantum eigenstates of a particle bound in $λz^{2m}$ $(λ>0, m=1,2,...)$ potentials is developed. It is represented by ensembles of classical trajectories with energy distributions that can take on negative values, for $...
Growth and collapse of subsystem complexity under random unitary circuits
Jeongwan Haah, Douglas Stanford·Oct 21, 2025
For chaotic quantum dynamics modeled by random unitary circuits, we study the complexity of reduced density matrices of subsystems as a function of evolution time where the initial global state is a product pure state. The state complexity is defined...