Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum Enhanced Dark-Matter Search with Entangled Fock States in High-Quality Cavities
Benjamin Freiman, Xinyuan You, Andy C. Y. Li +5 more·Oct 30, 2025
We present a quantum-enhanced protocol for detecting wave-like dark matter using an array of $N$ entangled superconducting cavities initialized in an $m$-photon Fock state. By distributing and recollecting the quantum state with an entanglement-distr...
Wavefront Curvature and Transverse Atomic Motion in Time-Resolved Atom Interferometry: Impact and Mitigation
Noam Mouelle, Jeremiah Mitchell, Valerie Gibson +1 more·Oct 30, 2025
Time-resolved atom interferometry, as employed in applications such as gravitational wave detection and searches for ultra-light dark matter, requires precise control over systematic effects. In this work, we investigate phase noise arising from shot...
Certification and Classification of Linear Quantum Error Mitigation Methods
Zach Blunden-Codd, Mohamed Tamaazousti·Oct 30, 2025
Numerous mitigation methods exist for quantum noise suppression, making it challenging to identify the optimum approach for a specific application; especially as ongoing advances in hardware tuning and error correction are expected to reduce logical ...
JCO: Optimization Framework for Nonlinear Superconducting Circuits Using a Lumped-Element Approach and Harmonic Balance
Emanuele Palumbo, Alessandro Alocco, Andrea Celotto +4 more·Oct 30, 2025
In this contribution we present JosephsonCircuitsOptimizer.jl (JCO), a simulation and optimization framework based on the JosephsonCircuits.jl library for Julia. It models superconducting circuits that include Josephson junctions (JJs) and other nonl...
Network nonlocality breaking channels
Kaushiki Mukherjee, Nirman Ganguly·Oct 30, 2025
Network nonlocality, a recently noted form of nonlocality has been shown to have distinctive features, marking a significant departure from the notion of standard Bell nonlocality in the context of quantum correlations. On a pragmatic front, it has g...
Enhancing the reachability of variational quantum algorithms via input-state design
Shaojun Wu, Shan Jin, Abolfazl Bayat +1 more·Oct 30, 2025
Variational quantum algorithms (VQAs) face an inherent trade-off between expressivity and trainability: deeper circuits can represent richer states but suffer from noise accumulation and barren plateaus, while shallow circuits remain trainable and im...
Quantum predator-prey cycles in dissipative Rydberg lattices
Ya-Xin Xiang, Zhengyang Bai, Yu-Qiang Ma·Oct 30, 2025
The Lotka-Volterra model is a paradigm for self-organized predator-prey oscillations in far-from-equilibrium systems, yet testing it in real-world ecosystems is hindered by uncontrollable microscopic parameters. Here, we propose a quantum analogue of...
In situ quantum verification of polarization-stabilized optical channels
Matthew L. Stevens, Noah I. Wasserbeck, Zachary Goisman +8 more·Oct 30, 2025
The active stabilization of polarization channels is a task of growing importance as quantum networks move to deployed demonstrations over existing fiber infrastructure. However, the uniquely strict requirements for high-fidelity qubit transmission c...
GHZ-Preserving Gates and Optimized Distillation Circuits
Mingyuan Wang, Guus Avis, Stefan Krastanov·Oct 29, 2025
Greenberger-Horne-Zeilinger (GHZ) states play a central role in quantum computing and communication protocols, as a typical multipartite entanglement resource. This work introduces an efficient enumeration and simulation method for circuits that pres...
Dynamics of entanglement fluctuations and quantum Mpemba effect in the $ν=1$ QSSEP model
Angelo Russotto, Filiberto Ares, Pasquale Calabrese +1 more·Oct 29, 2025
We study the out-of-equilibrium dynamics of entanglement fluctuations in the $ν=1$ Quantum Symmetric Simple Exclusion Process, a free-fermion chain with hopping amplitudes that are stochastic in time but homogeneous in space. Previous work showed tha...
Decoherence Estimation of Superconducting Qubit
Yoav Koral, Shilo Avraham, Manimuthu Peryasamy +2 more·Oct 29, 2025
Decoherence of quantum bits arises primarily from the parasitic resistance within the qubit. This study presents the analysis of the decoherence process due to physical interactions between the qubit photons and parasitic resistance atoms, utilizing ...
Variational quantum computing for quantum simulation: principles, implementations, and challenges
Lucas Q. Galvão, Anna Beatriz M. de Souza, Marcelo A. Moret +1 more·Oct 29, 2025
This work presents a comprehensive overview of variational quantum computing and their key role in advancing quantum simulation. This work explores the simulation of quantum systems and sets itself apart from approaches centered on classical data pro...
Renormalization-group-based preparation of matrix product states on up to 80 qubits
Moritz Scheer, Alberto Baiardi, Elisa Bäumer Marty +2 more·Oct 28, 2025
A key challenge for quantum computers is the efficient preparation of many-body entangled states across many qubits. In this work, we demonstrate the preparation of matrix product states (MPS) using a renormalization-group(RG)-based quantum algorithm...
Fundamental limit on the heralded single photons' spectral brightness
Tse-Yu Lin, Wei-Kai Huang, Pei-Yu Tu +2 more·Oct 28, 2025
The heralded single photons' (HSPs) spectral brightness (SB) is defined as the generation rate per linewidth. As the generation rate of HSPs gets larger or the photons' linewidth becomes narrower, both of which are desirable in quantum information pr...
Pilot-Wave Simulator: Exact Classical Sampling from Ideal and Noisy Quantum Circuits up to Hundreds of Qubits
Gleb Kalachev, Pavel Mosharev, Zuoheng Zou +2 more·Oct 28, 2025
Quantum circuit simulators running on classical computers offer a vital platform for designing, testing, and optimizing quantum algorithms, driving innovation despite limited access to real quantum hardware. However, their scalability is inherently c...
A Sub-kHz Mechanical Resonator Passively Cooled to 6 mK
Loek van Everdingen, Jaimy Plugge, Tim Fuchs +6 more·Oct 28, 2025
Highly coherent mechanical resonators are invaluable to ultrasensitive detection techniques by enabling detection of small forces. Studying mechanical resonators in a thermal equilibrium state at millikelvin temperatures provides a promising path to ...
An exact Error Threshold of Surface Code under Correlated Nearest-Neighbor Errors: A Statistical Mechanical Analysis
SiYing Wang, ZhiXin Xia, Yue Yan +1 more·Oct 28, 2025
The surface code represents a promising candidate for fault-tolerant quantum computation due to its high error threshold and experimental accessibility with nearest-neighbor interactions. However, current exact surface code threshold analyses are bas...
Matrix product state approach to lossy boson sampling and noisy IQP sampling
Sojeong Park, Changhun Oh·Oct 28, 2025
Sampling problems have emerged as a central avenue for demonstrating quantum advantage on noisy intermediate-scale quantum devices. However, physical noise can fundamentally alter their computational complexity, often making them classically tractabl...
Exploiting biased noise in variational quantum models
Connor van Rossum, Sally Shrapnel, Riddhi Gupta·Oct 28, 2025
Variational quantum algorithms (VQAs) are promising tools for demonstrating quantum utility on near-term quantum hardware, with applications in optimisation, quantum simulation, and machine learning. While researchers have studied how easy VQAs are t...
Nonreciprocity enhanced Quantum Gyroscopes based on Surface Acoustic Waves
Y. T. Zhu, Shibei Xue, Fangfang Ju +1 more·Oct 28, 2025
Surface acoustic waves (SAWs), as Rayleigh waves generated by elastic media, have been used in gyroscopes for over 40 years due to their unique propagation characteristics. However, their working principle, based on Coriolis effects, has become incre...