Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
MOSAIQC: Mixed-topology-aware Optimization for Scalable Approximate noise-Informed Quantum circuit Cutting
Koen Mesman, Yinglu Tang, Matthias Moller +2 more·Jul 21, 2026
Current quantum computers do not yet have the required qubit resources to meet the demands of most practical quantum algorithms. To circumvent this constraint, the practice of dividing these algorithms into parts through quantum circuit cutting has b...
Enhanced Neural Quantum State via Annealed Gradient Descent
Shiwei Zhou, Yiming Huang, Xiao Yuan +1 more·Jul 21, 2026
Neural quantum states offer expressive representations of quantum many-body wave functions, yet their practical accuracy can be limited by stochastic optimization rather than representational capacity. Here we identify a finite-sample instability, te...
Quantum Dynamics of $H_2^+$ in Orthogonal Two-Color Fields
Jinzhen Zhu·Jul 21, 2026
We present full-dimensional quantum simulations of $H_2^+$ dissociative ionization driven by strong orthogonal laser fields. We consider equal-frequency orthogonal components, which generate elliptical or circular polarization depending on their rela...
Quantum-Enhanced Multi-Objective Optimization
Maolin Luo, Jiapei Zhuang, Zuoheng Zou +1 more·Jul 21, 2026
Multi-objective combinatorial optimization requires identifying Pareto-optimal trade-off solutions among conflicting objectives, often making it more demanding than its single-objective counterpart. Although quantum multi-objective optimization metho...
Collective modes in non-Hermitian fermionic superfluids
Gabriel Angelo V. Vila, Kristian Hauser Villegas·Jul 21, 2026
The Higgs and Nambu-Goldstone modes are paradigmatic collective excitations in superconductors and superfluids. These modes are commonly analyzed within the pseudospin formulation of BCS theory, where the dynamics are obtained from the Heisenberg equ...
Simulating Majorana fermions in black hole with Ising Models
John Vienn A. Estremadura, Kristian Hauser A. Villegas·Jul 21, 2026
Quantum field theory (QFT) in curved spacetime has led to profound predictions, including the Unruh effect and Hawking radiation, yet their direct observation remains extraordinarily challenging because of their extremely weak signatures. Here, we sh...
Quantum Sensing Beyond Exceptional Points via Hidden symmetry-protected vacuum-noise fixed point
Wencong Wang, Yuyang Liang, Peng Han +3 more·Jul 21, 2026
Exceptional-point (EP) sensing has attracted considerable interest because of its anomalous response scaling. However, recent studies have shown that the enhanced response near an EP is inevitably accompanied by amplified quantum noise, fundamentally...
Is EEG-to-Text Feasible in Real-World Scenarios? An In-Depth Analysis Using a Neuropsychology-Inspired Benchmark
Zihan Zhang, Yu Bao, Xiao Ding +2 more·Jul 21, 2026
Translating brain signals into text could restore communication for people with severe paralysis, yet practically usable systems to date rely on invasive electrocorticography (ECoG). Electroencephalography (EEG) offers a non-invasive alternative, and...
Quantum sensing of low-frequency electric signal enabled by modulated auxiliary field in Rydberg atoms
Xiayang Fan, Shenchao Jin, Jiatian Liu +3 more·Jul 21, 2026
Rydberg atoms have emerged as a versatile and efficient platform for high-sensitivity quantum sensing of free-space electric fields, with remarkable progress in detecting low-frequency signals. To date, low-frequency Rydberg receivers have relied on ...
Trade-off between predictability and quantum coherence for multi-path interferometry and its operational interpretation
Ezra Acalapati·Jul 21, 2026
The complementarity principle is a cornerstone of quantum mechanics. In this work, we investigate a complementarity relation between the predictability and quantum coherence, respectively, representing the particle-like and wave-like behaviour in wav...
A Reversible Continuous-Variable Photonic Memory Architecture Based on Displacement-Evolved Coherent-State Dynamics
Sanjit Krishna G M·Jul 21, 2026
Modern information systems increasingly require memory architectures capable of storing not only static data but also the evolution of information over time. While continuous-variable photonic platforms have been extensively studied for quantum commu...
Monogamy inequalities of entanglement of assistance in $2\otimes 2\otimes d$ systems
Xue-Na Zhu, Gui Bao, Zhi-Xiang Jin +2 more·Jul 21, 2026
The monogamy relations characterize the distribution of quantum correlations among the multipartite quantum systems. We study the monogamy relations of the entanglement of assistance in $2\otimes 2\otimes d$ systems. We present explicitly the relatio...
Spontaneous optical emission of a randomly oriented chiral quantum source
Mikael P. Backlund·Jul 21, 2026
We derive the form of the one-photon state of the electromagnetic field resulting from spontaneous optical emission of a randomly oriented chiral quantum source, including electric dipole, magnetic dipole, and electric quadrupole contributions to the...
Dismantling the Stoquastic Dichotomy
Armen Karakashian, Itay Hen·Jul 21, 2026
We challenge the notion that a stoquastic binary governs fundamental computational boundaries in quantum computing and classical simulation of quantum systems. We argue that vanishing geometric phase (VGP), a geometric condition on the Hamiltonian's ...
Motional Kerr-Cat States of an Atom in an Optical Tweezer
Steven K. Pampel, Gur Lubin, Dawson P. Hewatt +6 more·Jul 20, 2026
Schrödinger cat states - quantum superpositions of classically or macroscopically distinct states - constitute a powerful resource for quantum computing, enhanced metrology, and probing coherence on large scales. Encoding such states in the phase spa...
Nonlinear Optics Mediated by Chiral Waveguide QED: Generation of Momentum-anticorrelated Photon Pairs
Wenqi Tong, Spencer J Walsh, H. Alaeian +1 more·Jul 20, 2026
In recent years, chiral quantum optics has emerged as an active research area due to the promising applications in quantum information processing as well as nonlinear optics. We present results on the properties of the incoherent component of the tra...
Quantum Reservoir Computing: Recent Advances and Future Directions
Shehbaz Tariq, Muhammad Talha, Arshid Ali +2 more·Jul 20, 2026
Quantum reservoir computing (QRC) uses the dynamics of a fixed or weakly tuned quantum system to transform temporal and sequential inputs into measured features, while training is typically confined to a classical readout. This separation reduces rel...
Simulating the Dicke Model on Qubit-Based and hybrid Qubit-Boson-Based Quantum Computers
Aravind P. Babu, Seongjin Ahn, Jing Sun +3 more·Jul 20, 2026
The Dicke model provides a fundamental description of collective light-matter interactions and has long served as a testbed for exploring a wide range of physical phenomena in quantum optics and condensed matter physics. In this work, we develop a va...
From Canonical to Tunable Phase Diagrams in Open Quantum Long-Range Systems
Anish Acharya, Shamik Gupta·Jul 20, 2026
We investigate the dissipative dynamics of a generalized Lipkin-Meshkov-Glick (LMG) model coupled to a thermal environment. In this generalized model, in addition to the conventional quadratic interaction, one considers quartic interactions between s...
State $k$-designs from Hamiltonian evolution
Shengxian Hou, Zong-Yue Hou, Zhi-Cheng Yang·Jul 20, 2026
We study the generation of state $k$-designs from time evolution under a fixed Hamiltonian. Specifically, we consider the ensemble $\mathcal{E}=\left\{e^{-iHt}|ψ_0\rangle | \ t\sim \mathrm{Unif}[0,T],\, |ψ_0\rangle\sim \mathcal{E}'\right\}$, where th...