npj Quantum Information最新文献_第4页

Quantum computation via Floquet tailored Rydberg interactions 通过Floquet定制Rydberg相互作用进行量子计算

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2025-07-09 DOI: 10.1038/s41534-025-01068-z

Jun Wu, Jin-Lei Wu, Fu-Qiang Guo, Bing-Bing Liu, Shi-Lei Su, Xue-Ke Song, Liu Ye, Dong Wang

引用次数: 0

Excessive precision compromises accuracy even with unlimited resources due to the trade-off in quantum metrology 由于量子计量中的权衡，即使在无限资源的情况下，过度的精度也会损害精度

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2025-07-08 DOI: 10.1038/s41534-025-01071-4

Cong-Gang Song, Qing-yu Cai

引用次数: 0

High dimensional counterdiabatic quantum computing 高维反绝热量子计算

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2025-07-08 DOI: 10.1038/s41534-025-01070-5

Diego Tancara, Francisco Albarrán-Arriagada

{"title":"High dimensional counterdiabatic quantum computing","authors":"Diego Tancara, Francisco Albarrán-Arriagada","doi":"10.1038/s41534-025-01070-5","DOIUrl":"https://doi.org/10.1038/s41534-025-01070-5","url":null,"abstract":"The digital version of adiabatic quantum computing enhanced by counterdiabatic driving, known as digitized counterdiabatic quantum computing, has emerged as a paradigm that opens the door to fast and low-depth algorithms. In this work, we explore the extension of this paradigm to high-dimensional systems. Specifically, we consider qutrits in the context of quadratic problems, obtaining the qutrit Hamiltonian codifications and the counterdiabatic drivings. Our findings show that qutrits can improve the solution quality up to 90 times compared to the qubit counterpart. We tested our proposal on 1000 random instances of the multiway number partitioning, max 3-cut, and portfolio optimization problems, demonstrating that, in general, without prior knowledge, it is better to use qutrits and, apparently, high-dimensional systems in general instead of qubits. Finally, considering the state-of-the-art quantum platforms, we show the experimental feasibility of our high-dimensional counterdiabatic quantum algorithms at least in a fully digital form. This work paves the way for the efficient codification of optimization problems in high-dimensional spaces and their efficient implementation using counterdiabatic quantum computing.","PeriodicalId":19212,"journal":{"name":"npj Quantum Information","volume":"17 1","pages":""},"PeriodicalIF":7.6,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144578328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coherent enhancement of collection of light from linear ion crystals 线性离子晶体光收集的相干增强

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2025-07-08 DOI: 10.1038/s41534-025-01058-1

Thuy Dung Tran, Daniel Babjak, Artem Kovalenko, Kratveer Singh, Tuan Minh Pham, Petr Obšil, Adam Lešundák, Ondřej Číp, Lukáš Slodička

引用次数: 0

Conditioned quantum-assisted deep generative surrogate for particle-binary vector indicating thecalorimeter interactions 指示量热计相互作用的粒子二元矢量的条件量子辅助深度生成替代

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2025-07-07 DOI: 10.1038/s41534-025-01040-x

J. Quetzalcóatl Toledo-Marín, Sebastian Gonzalez, Hao Jia, Ian Lu, Deniz Sogutlu, Abhishek Abhishek, Colin Gay, Eric Paquet, Roger G. Melko, Geoffrey C. Fox, Maximilian Swiatlowski, Wojciech Fedorko

{"title":"Conditioned quantum-assisted deep generative surrogate for particle-binary vector indicating thecalorimeter interactions","authors":"J. Quetzalcóatl Toledo-Marín, Sebastian Gonzalez, Hao Jia, Ian Lu, Deniz Sogutlu, Abhishek Abhishek, Colin Gay, Eric Paquet, Roger G. Melko, Geoffrey C. Fox, Maximilian Swiatlowski, Wojciech Fedorko","doi":"10.1038/s41534-025-01040-x","DOIUrl":"https://doi.org/10.1038/s41534-025-01040-x","url":null,"abstract":"Particle collisions at accelerators like the Large Hadron Collider (LHC), recorded by experiments such as ATLAS and CMS, enable precise standard model measurements and searches for new phenomena. Simulating these collisions significantly influences experiment design and analysis but incurs immense computational costs, projected at millions of CPU-years annually during the high luminosity LHC (HL-LHC) phase. Currently, simulating a single event with Geant4 consumes around 1000 CPU seconds, with calorimeter simulations especially demanding. To address this, we propose a conditioned quantum-assisted generative model, integrating a conditioned variational autoencoder (VAE) and a conditioned restricted Boltzmann machine (RBM). Our RBM architecture is tailored for D-Wave’s Pegasus-structured advantage quantum annealer for sampling, leveraging the flux bias for conditioning. This approach combines classical RBMs as universal approximators for discrete distributions with quantum annealing’s speed and scalability. We also introduce an adaptive method for efficiently estimating effective inverse temperature, and validate our framework on Dataset 2 of CaloChallenge.","PeriodicalId":19212,"journal":{"name":"npj Quantum Information","volume":"685 1","pages":""},"PeriodicalIF":7.6,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144568899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Minimal state-preparation times for silicon spin qubits 硅自旋量子位的最小状态准备时间

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2025-07-05 DOI: 10.1038/s41534-025-01027-8

Christopher K. Long, Nicholas J. Mayhall, Sophia E. Economou, Edwin Barnes, Crispin H. W. Barnes, Frederico Martins, David R. M. Arvidsson-Shukur, Normann Mertig

{"title":"Minimal state-preparation times for silicon spin qubits","authors":"Christopher K. Long, Nicholas J. Mayhall, Sophia E. Economou, Edwin Barnes, Crispin H. W. Barnes, Frederico Martins, David R. M. Arvidsson-Shukur, Normann Mertig","doi":"10.1038/s41534-025-01027-8","DOIUrl":"https://doi.org/10.1038/s41534-025-01027-8","url":null,"abstract":"Efficient preparation of quantum states on noisy intermediate-scale quantum processors remains a significant challenge to achieve quantum advantage. While gate-based methods have been the traditional approach, pulse-based algorithms offer promising alternatives with finer control and potentially reduced overheads. Here, we leverage the concept of minimum evolution time (MET) as a fundamental metric for evaluating and benchmarking quantum-state-preparation efficiency. Using numerical modeling, we investigate METs achievable through optimized microwave and exchange pulse sequences on silicon quantum hardware. We focus our investigations on molecular ground states and arbitrary state transitions. Our results demonstrate remarkably low METs: 2.3 ns for H2, 4.6 ns for HeH+, and 27 ns for LiH. METs consistently remain below 50 ns for arbitrary four-qubit state transitions, outperforming gate-based methods. We perform further analyses, revealing the impact of silicon device parameters on MET performance. Notably, increasing the maximal exchange amplitude from 10 MHz to 1 GHz significantly reduces METs, while higher maximal microwave drive amplitudes lead to faster state transitions. These findings surpass results reported for other quantum architectures. Our numerical analysis also demonstrates reasonable robustness of pulse-based state preparation to device imperfections and leakage. Our study contributes to developing efficient quantum-simulation techniques and provides insights into the strengths of silicon quantum hardware.","PeriodicalId":19212,"journal":{"name":"npj Quantum Information","volume":"79 1","pages":""},"PeriodicalIF":7.6,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144566005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A universal circuit set using the S3 quantum double 一种使用S3量子双元的通用电路

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2025-07-03 DOI: 10.1038/s41534-025-01063-4

Liyuan Chen, Yuanjie Ren, Ruihua Fan, Arthur Jaffe

引用次数: 0

Noise resilience in adaptive and symmetric monitored quantum circuits 自适应和对称监控量子电路的噪声恢复能力

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2025-07-03 DOI: 10.1038/s41534-025-01057-2

Moein N. Ivaki, Teemu Ojanen, Ali G. Moghaddam

{"title":"Noise resilience in adaptive and symmetric monitored quantum circuits","authors":"Moein N. Ivaki, Teemu Ojanen, Ali G. Moghaddam","doi":"10.1038/s41534-025-01057-2","DOIUrl":"https://doi.org/10.1038/s41534-025-01057-2","url":null,"abstract":"Monitored quantum circuits offer great perspectives for exploring the interplay of quantum information and complex quantum dynamics. These systems exhibit entanglement and purification phase transitions, along with various symmetry-enforced and ordered non-equilibrium phases. The central question is whether these phases can persist in real-world noisy devices. We study the fate of the symmetry-enforced absorbing state and charge-sharpening transitions in the presence of noise, and establish that noise results in coherent and incoherent symmetry-breaking effects. The coherent effects blur the distinction between phases, turning sharp transitions into crossovers, but states far from phase boundaries largely retain their essential character. We find, corrective feedback and postselected measurements can mitigate noise, stabilizing the absorbing and charge-sharp phases. Hence, if challenges like postselection are addressed, errors do not prevent the observation of symmetry-enforced phases in noisy intermediate-scale quantum (NISQ) devices. Additionally, we propose a symmetry-based method to characterize noise and gate fidelity.","PeriodicalId":19212,"journal":{"name":"npj Quantum Information","volume":"82 1","pages":""},"PeriodicalIF":7.6,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144547573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantum natural stochastic pairwise coordinate descent 量子自然随机成对坐标下降

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2025-07-02 DOI: 10.1038/s41534-025-01047-4

Mohammad Aamir Sohail, Mohsen Heidari, S. Sandeep Pradhan

引用次数: 0

Practical techniques for high-precision measurements on near-term quantum hardware and applications in molecular energy estimation 近期量子硬件高精度测量的实用技术及其在分子能量估计中的应用

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2025-07-02 DOI: 10.1038/s41534-025-01066-1

Keijo Korhonen, Hetta Vappula, Adam Glos, Marco Cattaneo, Zoltán Zimborás, Elsi-Mari Borrelli, Matteo A. C. Rossi, Guillermo García-Pérez, Daniel Cavalcanti

{"title":"Practical techniques for high-precision measurements on near-term quantum hardware and applications in molecular energy estimation","authors":"Keijo Korhonen, Hetta Vappula, Adam Glos, Marco Cattaneo, Zoltán Zimborás, Elsi-Mari Borrelli, Matteo A. C. Rossi, Guillermo García-Pérez, Daniel Cavalcanti","doi":"10.1038/s41534-025-01066-1","DOIUrl":"https://doi.org/10.1038/s41534-025-01066-1","url":null,"abstract":"Achieving high-precision measurements on near-term quantum devices is critical for advancing quantum computing applications. Quantum computers suffer from high readout errors, making quantum simulations with high accuracy requirements particularly challenging. This paper implements practical techniques to reach accuracies essential for quantum chemistry by addressing key overheads and noise sources. Specifically, we leverage locally biased random measurements for reducing shot overhead, repeated settings with parallel quantum detector tomography for reducing circuit overhead and mitigating readout errors, and blended scheduling for mitigating time-dependent noise. We demonstrate these techniques via molecular energy estimation of the BODIPY molecule on a Hartree-Fock state on an IBM Eagle r3, obtaining a reduction in measurement errors by an order of magnitude from 1-5% to 0.16%. These strategies pave the way for more reliable quantum computations, particularly for applications requiring precise molecular energy calculations.","PeriodicalId":19212,"journal":{"name":"npj Quantum Information","volume":"647 1","pages":""},"PeriodicalIF":7.6,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144533764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0