Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Ability of entanglement and purity to help to detect systematic experimental errors
Julia Freund, Francesco Basso Basset, Tobias M. Krieger +12 more·Mar 12, 2025
Measurements are central in all quantitative sciences, and a fundamental challenge is to make observations without systematic measurement errors. This holds in particular for quantum information processing, where other error sources, such as noise an...
Unification of stochastic matrices and quantum operations for N-level systems
Bilal Canturk·Mar 12, 2025
The time evolution of the one-point probability vector of stochastic processes and quantum processes for $N$-level systems have been unified. Hence, quantum states and quantum operations can be regarded as generalizations of the one-point probability...
Fundamental limits for thermodynamic control with quantum feedback
Kaiyuan Ji, Gilad Gour, Mark M. Wilde·Mar 12, 2025
The study of feedback control inspired by Maxwell's demon is central to the understanding of the relationship between thermodynamics and information. In this paper, we establish fundamental lower limits on the work costs of system conversion with qua...
Hyperfine Coupling Constants on Quantum Computers: Performance, Errors, and Future Prospects.
Phillip W K Jensen, Gustav Stausbøll Hedemark, K. M. Ziems +6 more·Mar 12, 2025
We present the first implementation and computation of electron spin resonance isotropic hyperfine coupling constants (HFCs) on a quantum hardware. As illustrative test cases, we compute the HFCs for the hydroxyl radical (OH•), nitric oxide (NO•), an...
Eigen-SNAP gate for photonic qubits in a cavity-transmon system
M. Meschede, Ludwig Mathey·Mar 12, 2025
In the pursuit of robust quantum computing, we put forth a platform based on photonic qubits in a circuit-QED environment. Specifically, we propose a versatile two-qubit gate based on two cavities coupled via a transmon, constituting a selective numb...
Distributed quantum algorithm for divergence estimation and beyond
Honglin Chen, Wei Xie, Yingqi Yu +2 more·Mar 12, 2025
With the rapid advancement of quantum information technology, designing efficient distributed quantum algorithms to perform various information processing tasks remains challenging. In this paper, we consider a distributed scenario where two parties,...
Simulation of Two-Qubit Grover Algorithm in MBQC with Universal Blind Quantum Computation
Youngkyung Lee, Doyoung Chung·Mar 12, 2025
The advancement of quantum computing technology has led to the emergence of early-stage quantum cloud computing services. To fully realize the potential of quantum cloud computing, it is essential to develop techniques that ensure the privacy of both...
Correlated Quasiparticle Poisoning from Phonon-Only Events in Superconducting Qubits.
E. Yelton, C. P. Larson, K. Dodge +2 more·Mar 12, 2025
Errors that are correlated across a qubit array pose an obstacle to quantum error correction. We observe elevated correlated poisoning rates in superconducting qubit arrays at the start of a cooldown followed by power-law reductions in time, while th...
Materials Discovery With Quantum-Enhanced Machine Learning Algorithms
Ignacio F. Grana, Savvas Varsamopoulos, Tatsuhito Ando +2 more·Mar 12, 2025
Materials discovery is a computationally intensive process that requires exploring vast chemical spaces to identify promising candidates with desirable properties. In this work, we propose using quantum-enhanced machine learning algorithms following ...
Optimal elemental configuration search in crystal using quantum approximate optimization algorithm
Kazuhide Ichikawa, Genta Hayashi, Satoru Ohuchi +3 more·Mar 12, 2025
Optimal elemental configuration search in crystal is a crucial task to discovering industrially important materials such as lithium-ion battery cathodes. In this paper we present application of quantum approximate optimization algorithm, the represen...
Large-Scale FPGA-Based Privacy Amplification Exceeding $10^8$ Bits for Quantum Key Distribution
Xi Cheng, Haokun Mao, Hong-wei Xu +1 more·Mar 12, 2025
Privacy Amplification (PA) is indispensable in Quantum Key Distribution (QKD) post-processing, as it eliminates information leakage to eavesdroppers. Field-programmable gate arrays (FPGAs) are highly attractive for QKD systems due to their flexibilit...
Single-qudit quantum neural networks for multiclass classification
Leandro C. Souza, Renato Portugal·Mar 12, 2025
This paper proposes a single-qudit quantum neural network for multiclass classification by using the enhanced representational capacity of high-dimensional qudit states. Our design employs a d-dimensional unitary operator, where d corresponds to the ...
Variational preparation of normal matrix product states on quantum computers
Ben Jaderberg, George Pennington, Kate V. Marshall +6 more·Mar 12, 2025
Preparing matrix product states (MPSs) on quantum computers is an essential routine in the simulation of many-body physics. However, widely-used schemes based on staircase circuits are often too deep to execute on current hardware. Here we demonstrat...
A Short Scalability Study on the SeQUeNCe Parallel Quantum Network Simulator
Aaron Welch, Mariam Kiran·Mar 12, 2025
As quantum networking continues to grow in importance, its study is of interest to an ever wider community and at an increasing scale. However, the development of its physical infrastructure remains burdensome, and services providing third party acce...
Trotter error mitigation by error profiling with shallow quantum circuit
Sang-Jun Lee, Youngseok Kim, Seung-woo Lee·Mar 12, 2025
Understanding the dynamics of quantum systems is crucial in many areas of physics, but simulating many-body systems presents significant challenges due to the large Hilbert space to navigate and the exponential growth of computational overhead. Quant...
Quantum Computing and Cybersecurity Education: A Novel Curriculum for Enhancing Graduate STEM Learning
S. Upadhyay, Koustubh Phalak, Jungeun Lee +2 more·Mar 12, 2025
Quantum computing is an emerging paradigm with the potential to transform numerous application areas by addressing problems considered intractable in the classical domain. However, its integration into cyberspace introduces significant security and p...
Explainable Quantum Machine Learning for Multispectral Images Segmentation: Case Study
Tomasz Rybotycki, Manish K. Gupta, Piotr Gawron·Mar 11, 2025
The emergence of Big Data changed how we approach information systems engineering. Nowadays, when we can use remote sensing techniques for Big Data acquisition, the issues such data introduce are as important as ever. One of those concerns is the pro...
Quantum Gate Dynamics Beyond the Rotating-Wave Approximation using Multi-Timescale Quantum Averaging Theory
Kristian D. Barajas, Wesley C. Campbell·Mar 11, 2025
We present a quantum averaging theory (QAT) for analytically modeling unitary gate dynamics in driven quantum systems beyond the rotating-wave approximation. QAT addresses the simultaneous presence of distinct timescales by generating a rotating fram...
Einstein's 1927 gedanken experiment: how to complete it and measure the collapse time of a spatially spread photon
Alejandro A. Hnilo·Mar 11, 2025
In the famous Solvay 1927 conference, Einstein discussed a gedanken experiment involving a single photon diffracted at an aperture and impinging on a screen. He devised the example to support De Broglie's hypothesis of the pilot wave, and his own ide...
Holographic Rényi $n\to 0$ entropy and Euclidean fluids
Cesar A. Agón, Horacio Casini, Pedro J. Martinez·Mar 11, 2025
We explore the holographic prescription for computing the refined Rényi entropies $\tilde S_n$ in the $n \to 0$ limit within the AdS$_{d+1}$/CFT$_d$ framework. This limit can be interpreted as a high-temperature regime with respect to the energy defi...