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 ensemble learning with a programmable superconducting processor
Jiachen Chen, Yao-Juan Wu, Zhen Yang +30 more·Mar 14, 2025
Quantum machine learning is among the most exciting potential applications of quantum computing. However, the vulnerability of quantum information to environmental noises and the consequent high cost for realizing fault tolerance has impeded the quan...
Fault-tolerant logical state construction based on cavity-QED network
R. Asaoka, Yasunari Suzuki, Yuuki Tokunaga·Mar 14, 2025
Exploring an efficient and scalable architecture of fault-tolerant quantum computing (FTQC) is vital for demonstrating useful quantum computing. Here, we propose and evaluate a scalable and practical architecture with a cavity-quantum-electrodynamics...
Scaling the Automated Discovery of Quantum Circuits via Reinforcement Learning with Gadgets
J. Olle, O. Yevtushenko, Florian Marquardt·Mar 14, 2025
Reinforcement Learning (RL) has established itself as a powerful tool for designing quantum circuits, which are essential for processing quantum information. RL applications have typically focused on circuits of small to intermediate complexity, as c...
Quantum teleportation between simulated binary black holes
Aiden Daniel, Tanmay Bhore, Jiannis K. Pachos +2 more·Mar 13, 2025
The quantum description of a black hole predicts that quantum information hidden behind the event horizon can be teleported outside almost instantaneously. In this work, we demonstrate that a chiral spin-chain model, which naturally simulates a binar...
Direct estimation of arbitrary observables of an oscillator
Tanjung Krisnanda, Fernando Valadares, Kyle Timothy Ng Chu +6 more·Mar 13, 2025
Quantum harmonic oscillators serve as fundamental building blocks for quantum information processing, particularly in the context of the bosonic circuit quantum electrodynamics (cQED) platform. Conventional methods for extracting oscillator propertie...
Fast Sideband Control of a Weakly Coupled Multimode Bosonic Memory
Jordan Huang, Thomas J. DiNapoli, Gavin Rockwood +9 more·Mar 13, 2025
Circuit quantum electrodynamics (cQED) with superconducting cavities coupled to nonlinear circuits like transmons offers a promising platform for hardware-efficient quantum information processing. We address critical challenges in realizing this arch...
Coherence of a hole spin flopping-mode qubit in a circuit quantum electrodynamics environment
L'eo Noirot, C. X. Yu, J. C. Abadillo-Uriel +5 more·Mar 13, 2025
The entanglement of microwave photons and spin qubits in silicon represents a pivotal step forward for quantum information processing utilizing semiconductor quantum dots. Such hybrid spin circuit quantum electrodynamics (cQED) has been achieved by g...
Quantum switches for single-photon routing and entanglement generation in waveguide-based networks
Juan Cumbrado, R. Puebla·Mar 13, 2025
The interconnection of quantum nodes holds great promise for scaling up quantum computing units and enabling information processing across long-distance quantum registers. Such quantum networks can be realized using superconducting qubits linked by w...
Quantum Averaging Theory for Multi-Timescale Driven Quantum Systems
Kristian D. Barajas, Wesley C. Campbell·Mar 12, 2025
We present a multi-timescale Quantum Averaging Theory (QAT), a unitarity-preserving generalized Floquet framework for analytically modeling periodically and almost-periodically driven quantum systems across multiple timescales. By integrating the Mag...
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...
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...
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,...
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 ...
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...
Tensor networks for quantum computing
A. Berezutskii, Atithi Acharya, R. Ellerbrock +24 more·Mar 11, 2025
Tensor networks have become a useful tool in many areas of physics, especially in quantum information science and quantum computing, where they are used to represent and manipulate quantum states and processes. The original use of tensor networks is ...
Quantum squeezing amplification with a weak Kerr nonlinear oscillator
Yanyan Cai, Xiaowei Deng, Libo Zhang +8 more·Mar 11, 2025
Quantum squeezed states, with biased quantum noise, have been widely utilized in quantum sensing and quantum error correction applications. However, generating and manipulating these nonclassical states with a large squeezing degree typically require...
Eigenstate control of plasmon wavepackets with electron-channel blockade
S. Takada, G. Georgiou, Junliang Wang +8 more·Mar 10, 2025
Coherent manipulation of plasmon wavepackets in solid-state systems is crucial for advancing nanoscale electronic devices, offering a unique platform for quantum information processing based on propagating quantum bits. Controlling the eigenstate of ...
Hybrid Quantum Surface Acoustic Wave with Skyrmion Qubit for Quantum Information Processing.
Yu-Yuan Chen, Zhihui Peng, Yu-xi Liu·Mar 10, 2025
Surface acoustic wave (SAW) devices are key components of classical communication systems and recently studied for quantum information processing. We here propose and study a hybrid quantum system composed of skyrmion qubit and a SAW cavity, which su...
Lindblad many-body scars
Antonio M. García-García, Zhongling Lu, Lucas Sá +1 more·Mar 9, 2025
Quantum many-body scars have received much recent attention for being both intriguing non-ergodic states in otherwise quantum chaotic systems and promising candidates to encode quantum information efficiently. So far, these studies have mostly been r...