Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
The Complexity of Local Stoquastic Hamiltonians on 2D Lattices
Gabriel Waite, Michael J. Bremner·Feb 20, 2025
We show the 2-Local Stoquastic Hamiltonian problem on a 2D square qubit lattice is StoqMA-complete. We achieve this by extending the spatially sparse circuit construction of Oliveira and Terhal, as well as the perturbative gadgets of Bravyi, DiVincen...
Quantum stick-slip motion in nanoscaled friction
Dai-Nam Le, Pablo Rodriguez-Lopez, Lilia M. Woods·Feb 20, 2025
Friction in atomistic systems is usually described by the classical Prandtl-Tomlinson model suitable for capturing the dragging force of a nanoparticle in a periodic potential. Here we consider the quantum mechanical version of this model in which th...
Bohmian Mechanics fails to compute multi-time correlations
Robert C. Helling·Feb 20, 2025
The violation of Bell type inequalities in quantum systems manifests that quantum states cannot be described by classical probability distributions. Yet, Bohmian mechanics is a realistic, non-local theory of classical particle trajectories that is cl...
Time-adaptive single-shot crosstalk detector on superconducting quantum computer
Haiyue Kang, B. Harper, Muhammad Usman +1 more·Feb 20, 2025
Quantum crosstalk which stems from unwanted interference of quantum operations with nearby qubits is a major source of noise or errors in a quantum processor. In the context of shared quantum computing, it is challenging to mitigate the crosstalk eff...
Passive leakage removal unit based on a disordered transmon array
Gonzalo Mart'in-V'azquez, Taneli Tolppanen, M. Silveri·Feb 20, 2025
Leakage out from the qubit subspace compromises standard quantum error correction protocols and is a challenge for practical quantum computing. We propose a passive leakage removal unit based on an array of coupled disordered transmons and last-site ...
Noise Mitigation in Single Microwave Photon Counting by Cascaded Quantum Measurements
A. May, Leo Sutevski, J. Solard +7 more·Feb 20, 2025
While single-photon counting is routinely achieved in the optical domain, operational single microwave photon detectors (SMPDs) have only recently been demonstrated. SMPDs are critical for sensing weak signals from incoherent emitters, with applicati...
Quantum computer formulation of the FKP-operator eigenvalue problem for probabilistic learning on manifolds
Christian Soize, Loïc Joubert-Doriol, A. Izmaylov·Feb 20, 2025
We present a quantum computing formulation to address a challenging problem in the development of probabilistic learning on manifolds (PLoM). It involves solving the spectral problem of the high-dimensional Fokker-Planck (FKP) operator, which remains...
A Quantum Analog of Delsarte's Linear Programming Bounds
R. Okada·Feb 20, 2025
This thesis presents results in quantum error correction within the context of finite dimensional quantum metric spaces. In classical error correction, a focal problem is the study of large codes of metric spaces. For a class of finite metric spaces ...
Micro Blossom: Accelerated Minimum-Weight Perfect Matching Decoding for Quantum Error Correction
Yue Wu, Namitha Liyanage, Lin Zhong·Feb 20, 2025
Minimum-Weight Perfect Matching (MWPM) decoding is important to quantum error correction decoding because of its accuracy. However, many believe that it is difficult, if possible at all, to achieve the microsecond latency requirement posed by superco...
Adaptive syndrome extraction
Noah F. Berthusen, Shi Jie Samuel Tan, Eric Huang +1 more·Feb 20, 2025
Device error rates on current quantum computers have improved enough to where demonstrations of error correction below break-even are now possible. Still, the circuits required for quantum error correction introduce significant overhead and sometimes...
Packaged Quantum States for Quantum Simulation of Lattice Gauge Theories
Rongchao Ma·Feb 20, 2025
We develop a mathematical framework for the quantum simulation of lattice gauge theories using gauge-invariant packaged quantum states \cite{Ma2017,Ma2025}. In this formalism, every single excitation transforms as a complete \textbf{irreducible repre...
PQBFL: A Post-Quantum Blockchain-based Protocol for Federated Learning
Hadi Gharavi, J. Granjal, Edmundo Monteiro·Feb 20, 2025
One of the goals of Federated Learning (FL) is to collaboratively train a global model using local models from remote participants. However, the FL process is susceptible to various security challenges, including interception and tampering models, in...
Towards efficient quantum algorithms for diffusion probability models
Yunfei Wang, Ruoxi Jiang, Yingda Fan +4 more·Feb 20, 2025
A diffusion probabilistic model (DPM) is a generative model renowned for its ability to produce high-quality outputs in tasks such as image and audio generation. However, training DPMs on large, high-dimensional datasets such as high-resolution image...
Provable Quantum Algorithm Advantage for Gaussian Process Quadrature
Cristian A. Galvis-Florez, Ahmad Farooq, Simo Särkkä·Feb 20, 2025
The aim of this paper is to develop novel quantum algorithms for Gaussian process quadrature methods. Gaussian process quadratures are numerical integration methods where Gaussian processes are used as functional priors for the integrands to capture ...
Purest Quantum State Identification
Yingqi Yu, Honglin Chen, Jun Wu +2 more·Feb 20, 2025
Quantum noise constitutes a fundamental obstacle to realizing practical quantum technologies. To address the pivotal challenge of identifying quantum systems least affected by noise, we introduce the purest quantum state identification, which can be ...
Quantum walk based Monte Carlo simulation for photon interaction cross sections
Euimin Lee, Sangmin Lee, Shiho Kim·Feb 20, 2025
High-energy physics simulations traditionally rely on classical Monte Carlo methods to model complex particle interactions, often incurring significant computational costs. In this paper, we introduce a novel quantum-enhanced simulation framework tha...
Optimization driven quantum circuit reduction
Bodo Rosenhahn, Tobias J Osborne, Christoph Hirche·Feb 20, 2025
Implementing a quantum circuit on specific hardware with a reduced available gate set is often associated with a substantial increase in the length of the equivalent circuit. This process is also known as transpilation and due to decoherence, it is m...
Discovering highly efficient low-weight quantum error-correcting codes with reinforcement learning
Austin Yubo He, Zi-Wen Liu·Feb 20, 2025
The realization of scalable fault-tolerant quantum computing is expected to hinge on quantum error-correcting codes. In the quest for more efficient quantum fault tolerance, a critical code parameter is the weight of measurements that extract informa...
A Quantum Signature Validation Algorithm for Efficient Detection of Tampered Transactions in Blockchain
Jaime Torres, S. A. Ortega, M. Martin-Delgado·Feb 20, 2025
The Quantum Signature Validation Algorithm (QSVA) is introduced as a novel quantum-based approach designed to enhance the detection of tampered transactions in blockchain systems. Leveraging the powerful capabilities of quantum computing, especially ...
Thermodynamic closure of quantum measurements and the limits of the indirect measurement model
M. Hamed Mohammady, Francesco Buscemi·Feb 19, 2025
We investigate the consequences of requiring that a quantum measurement admit an adiabatic enclosure, so that it can be assigned a genuine thermodynamic description in which energy exchange is meaningfully resolved into work and heat. We identify two...