npj Quantum Information最新文献_第2页

Cavity-assisted resonance fluorescence from a nitrogen-vacancy center in diamond 金刚石中氮空位中心的空穴辅助共振荧光

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2024-11-07 DOI: 10.1038/s41534-024-00915-9

Viktoria Yurgens, Yannik Fontana, Andrea Corazza, Brendan J. Shields, Patrick Maletinsky, Richard J. Warburton

{"title":"Cavity-assisted resonance fluorescence from a nitrogen-vacancy center in diamond","authors":"Viktoria Yurgens, Yannik Fontana, Andrea Corazza, Brendan J. Shields, Patrick Maletinsky, Richard J. Warburton","doi":"10.1038/s41534-024-00915-9","DOIUrl":"https://doi.org/10.1038/s41534-024-00915-9","url":null,"abstract":"The nitrogen-vacancy center in diamond is an attractive resource for the generation of remote entangled states owing to its optically addressable and long-lived electronic spin. However, its low native fraction of coherent photon emission, ~3%, undermines the achievable spin-photon entanglement rates. Here, we couple a nitrogen-vacancy center with a narrow extrinsically-broadened linewidth (159 MHz), hosted in a micron-thin membrane, to an open microcavity. The resulting Purcell factor of ~1.8 increases the zero-phonon line fraction to over 44%. Operation in the Purcell regime, together with an efficient collection of the zero-phonon-line photons, allows resonance fluorescence to be detected for the first time without any temporal filtering. We achieve a >10 signal-to-laser background ratio. This selective enhancement of the center’s zero-phonon transitions could increase spin-spin entanglement success probabilities beyond an order of magnitude compared to state-of-the-art implementations, and enable powerful quantum optics techniques such as wave-packet shaping or all-optical spin manipulation.","PeriodicalId":19212,"journal":{"name":"npj Quantum Information","volume":"1 1","pages":""},"PeriodicalIF":7.6,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142597174","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

Finding the optimal probe state for multiparameter quantum metrology using conic programming 利用圆锥编程寻找多参数量子计量学的最佳探测状态

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2024-11-07 DOI: 10.1038/s41534-024-00905-x

Masahito Hayashi, Yingkai Ouyang

引用次数: 0

Scaling whole-chip QAOA for higher-order ising spin glass models on heavy-hex graphs 在重六边形图上扩展高阶等阶自旋玻璃模型的全芯片 QAOA

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2024-11-06 DOI: 10.1038/s41534-024-00906-w

Elijah Pelofske, Andreas Bärtschi, Lukasz Cincio, John Golden, Stephan Eidenbenz

引用次数: 0

Classification of dynamical Lie algebras of 2-local spin systems on linear, circular and fully connected topologies 线性拓扑、环状拓扑和全连接拓扑上的 2 局域自旋系统动态列阵的分类

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2024-11-06 DOI: 10.1038/s41534-024-00900-2

Roeland Wiersema, Efekan Kökcü, Alexander F. Kemper, Bojko N. Bakalov

引用次数: 0

Time-optimal control of a solid-state spin amidst dynamical quantum wind 动态量子风中固态自旋的时间优化控制

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2024-11-05 DOI: 10.1038/s41534-024-00912-y

Yang Dong, Wang Jiang, Xue-Dong Gao, Cui Yu, Yong Liu, Shao-Chun Zhang, Xiang-Dong Chen, Ibério de P. R. Moreira, Josep Maria Bofill, Gael Sentís, Ramón Ramos, Guillermo Albareda, Guang-Can Guo, Fang-Wen Sun

{"title":"Time-optimal control of a solid-state spin amidst dynamical quantum wind","authors":"Yang Dong, Wang Jiang, Xue-Dong Gao, Cui Yu, Yong Liu, Shao-Chun Zhang, Xiang-Dong Chen, Ibério de P. R. Moreira, Josep Maria Bofill, Gael Sentís, Ramón Ramos, Guillermo Albareda, Guang-Can Guo, Fang-Wen Sun","doi":"10.1038/s41534-024-00912-y","DOIUrl":"https://doi.org/10.1038/s41534-024-00912-y","url":null,"abstract":"Time-optimal control holds promise across the full spectrum of quantum technologies, where the rapid generation of unitary gates and state transformations is crucial to mitigate decoherence effects. In practical scenarios, quantum systems are always immersed in an external time-dependent field or potential, either owing to the inevitable influence of the environment or as a sought-after effect for enhanced coherence. The challenge then lies in finding the time-optimal approach to navigate quantum systems amidst dynamical ambient Hamiltonians, a pursuit that has proven elusive thus far. We showcase the implementation of arbitrary quantum state transformations and a universal set of single-qubit gates under a background Landau-Zener Hamiltonian. Leveraging the favorable coherence properties of timedomain Rabi oscillations, we achieve velocities surpassing the Mandelstam-Tamm quantum speed limit and significantly lower energy costs than those incurred by conventional quantum control techniques. These findings highlight a promising pathway to expedite and economize high-fidelity quantum operations.","PeriodicalId":19212,"journal":{"name":"npj Quantum Information","volume":"127 1","pages":""},"PeriodicalIF":7.6,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142588507","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

Qubit teleportation between a memory-compatible photonic time-bin qubit and a solid-state quantum network node 兼容存储器的光子时空比特与固态量子网络节点之间的量子传送

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2024-11-02 DOI: 10.1038/s41534-024-00910-0

Mariagrazia Iuliano, Marie-Christine Slater, Arian J. Stolk, Matthew J. Weaver, Tanmoy Chakraborty, Elsie Loukiantchenko, Gustavo C. do Amaral, Nir Alfasi, Mariya O. Sholkina, Wolfgang Tittel, Ronald Hanson

引用次数: 0

An architecture for two-qubit encoding in neutral ytterbium-171 atoms 中性镱-171 原子中的双量子比特编码架构

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2024-11-02 DOI: 10.1038/s41534-024-00898-7

Zhubing Jia, William Huie, Lintao Li, Won Kyu Calvin Sun, Xiye Hu, Aakash, Healey Kogan, Abhishek Karve, Jong Yeon Lee, Jacob P. Covey

引用次数: 0

Data needs and challenges for quantum dot devices automation 量子点设备自动化的数据需求和挑战

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2024-10-31 DOI: 10.1038/s41534-024-00878-x

Justyna P. Zwolak, Jacob M. Taylor, Reed W. Andrews, Jared Benson, Garnett W. Bryant, Donovan Buterakos, Anasua Chatterjee, Sankar Das Sarma, Mark A. Eriksson, Eliška Greplová, Michael J. Gullans, Fabian Hader, Tyler J. Kovach, Pranav S. Mundada, Mick Ramsey, Torbjørn Rasmussen, Brandon Severin, Anthony Sigillito, Brennan Undseth, Brian Weber

{"title":"Data needs and challenges for quantum dot devices automation","authors":"Justyna P. Zwolak, Jacob M. Taylor, Reed W. Andrews, Jared Benson, Garnett W. Bryant, Donovan Buterakos, Anasua Chatterjee, Sankar Das Sarma, Mark A. Eriksson, Eliška Greplová, Michael J. Gullans, Fabian Hader, Tyler J. Kovach, Pranav S. Mundada, Mick Ramsey, Torbjørn Rasmussen, Brandon Severin, Anthony Sigillito, Brennan Undseth, Brian Weber","doi":"10.1038/s41534-024-00878-x","DOIUrl":"https://doi.org/10.1038/s41534-024-00878-x","url":null,"abstract":"Gate-defined quantum dots are a promising candidate system for realizing scalable, coupled qubit systems and serving as a fundamental building block for quantum computers. However, present-day quantum dot devices suffer from imperfections that must be accounted for, which hinders the characterization, tuning, and operation process. Moreover, with an increasing number of quantum dot qubits, the relevant parameter space grows sufficiently to make heuristic control infeasible. Thus, it is imperative that reliable and scalable autonomous tuning approaches are developed. This meeting report outlines current challenges in automating quantum dot device tuning and operation with a particular focus on datasets, benchmarking, and standardization. We also present insights and ideas put forward by the quantum dot community on how to overcome them. We aim to provide guidance and inspiration to researchers invested in automation efforts.","PeriodicalId":19212,"journal":{"name":"npj Quantum Information","volume":"239 1","pages":""},"PeriodicalIF":7.6,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142556032","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

Robust projective measurements through measuring code-inspired observables 通过测量代码启发的观测值进行稳健的投影测量

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2024-10-26 DOI: 10.1038/s41534-024-00904-y

Yingkai Ouyang

引用次数: 0

Extending radiowave frequency detection range with dressed states of solid-state spin ensembles 利用固态自旋组合的掺杂态扩展辐射波频率探测范围

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2024-10-26 DOI: 10.1038/s41534-024-00891-0

Jens C. Hermann, Roberto Rizzato, Fleming Bruckmaier, Robin D. Allert, Aharon Blank, Dominik B. Bucher

{"title":"Extending radiowave frequency detection range with dressed states of solid-state spin ensembles","authors":"Jens C. Hermann, Roberto Rizzato, Fleming Bruckmaier, Robin D. Allert, Aharon Blank, Dominik B. Bucher","doi":"10.1038/s41534-024-00891-0","DOIUrl":"https://doi.org/10.1038/s41534-024-00891-0","url":null,"abstract":"Quantum sensors using solid-state spin defects excel in the detection of radiofrequency (RF) fields, serving various applications in communication, ranging, and sensing. For this purpose, pulsed dynamical decoupling (PDD) protocols are typically applied, which enhance sensitivity to RF signals. However, these methods are limited to frequencies of a few megahertz, which poses a challenge for sensing higher frequencies. We introduce an alternative approach based on a continuous dynamical decoupling (CDD) scheme involving dressed states of nitrogen vacancy (NV) ensemble spins driven within a microwave resonator. We compare the CDD methods to established PDD protocols and demonstrate the detection of RF signals up to ~85 MHz, about ten times the current limit imposed by the PDD approach under identical conditions. Implementing the CDD method in a heterodyne/synchronized protocol combines the high-frequency detection with high spectral resolution. This advancement extends to various domains requiring detection in the high frequency (HF) and very high frequency (VHF) ranges of the RF spectrum, including spin sensor-based magnetic resonance spectroscopy at high magnetic fields.","PeriodicalId":19212,"journal":{"name":"npj Quantum Information","volume":"3 1","pages":""},"PeriodicalIF":7.6,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142490772","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