为量子处理器建立远程纠缠网络是量子信息科学中一项突出挑战。我们提出并分析了一种双原子物种架构,用于中性原子量子计算机的远程纠缠,该架构基于将光阱原子量子比特阵列与用于光子收集的快速光学系统集成。其中一种原子物种用于原子-光子纠缠,另一种物种提供本地处理。我们比较了两种光学方法可实现的远程纠缠生成速率:使用透镜的自由空间光子收集和近同心、长工作距离的谐振腔。腔内的激光冷却与俘获消除了从源区域机械输运原子的需要,从而允许快速重复速率。在优化腔精细度参数的情况下,预测在实验可行参数下远程纠缠生成速率可超过 $10^3~\ m s^{-1}$。
英文摘要:
Development of a network for remote entanglement of quantum processors is an outstanding challenge in quantum information science. We propose and analyze a two-species architecture for remote entanglement of neutral atom quantum computers based on integration of optically trapped atomic qubit arrays with fast optics for photon collection. One of the atomic species is used for atom-photon entanglement, and the other species provides local processing. We compare the achievable rates of remote entanglement generation for two optical approaches: free space photon collection with a lens and a near-concentric, long working distance resonant cavity. Laser cooling and trapping within the cavity removes the need for mechanical transport of atoms from a source region, which allows for a fast repetition rate. Using optimized values of the cavity finesse, remote entanglement generation rates $> 10^3~\rm s^{-1}$ are predicted for experimentally feasible parameters.
Benchmarking Single-Qubit Gates on a Neutral Atom Quantum Processor
Quantum Technology Centre and Faculty of Physics, M.V. Lomonosov Moscow State University(莫斯科国立大学量子技术中心与物理学院);Russian Quantum Center(俄罗斯量子中心);NRC “Kurchatov Institute”(库尔恰托夫国家研究中心)
Optimized readout strategies for neutral atom quantum processors
Key Laboratory of Quantum Information, Chinese Academy of Sciences, University of Science and Technology of China(中国科学院量子信息重点实验室,中国科学技术大学);CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China(中国科学院量子信息与量子物理学前沿卓越创新中心,中国科学技术大学);Hefei National Laboratory, University of Science and Technology of China(合肥国家实验室,中国科学技术大学);Anhui Center for fundamental sciences in theoretical physics, University of Science and Technology of China(安徽理论物理基础科学中心,中国科学技术大学)
Benchmarking neutral atom-based quantum processors at scale
Jülich Supercomputing Centre, Forschungszentrum Jülich(于利希超算中心,于利希研究中心);RWTH Aachen University(亚琛工业大学);Department of Computer Science, University of Cologne(科隆大学计算机系)
Randomised measurements of a disorder-induced entanglement transition in a neutral atom quantum processor
Cavendish Laboratory, University of Cambridge(剑桥大学卡文迪许实验室);Department of Applied Mathematics and Theoretical Physics, University of Cambridge(剑桥大学应用数学与理论物理系);Department of Physics, University of Oxford(牛津大学物理系);QuEra Computing(QuEra计算公司)
Rigorous quantum state tomography for distributed quantum computing
Universidad de Concepción(康塞普西翁大学);ICFO - Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology(ICFO-光子科学研究所,巴塞罗那科学与技术研究院)
Implementing transferable annealing protocols for combinatorial optimisation on neutral atom quantum processors: a case study on smart-charging of electric vehicles
Möbius-Guided Diagonal-Gate Compilation with Native Multiqubit Controlled-Phase Gates on Neutral-Atom Processors
Beijing Academy of Quantum Information Sciences(北京量子信息科学研究院);Department of Computer Science and Engineering, The Chinese University of Hong Kong(香港中文大学计算机科学与工程系);State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University(清华大学物理系低维量子物理国家重点实验室);Frontier Science Center for Quantum Information(量子信息前沿科学中心)
Data and code for collision-model Dicke-state preparation: depth-fidelity frontiers, circuit costs, and superconducting-processor measurements
Saint Louis University(圣路易斯大学);KT One;University of South Florida(南佛罗里达大学);Koç University(科奇大学);TÜBİTAK Research Institute for Fundamental Sciences (TBAE)(土耳其科技研究基金会基础科学研究所(TBAE));Tokyo International University(东京国际大学);Nanoelectronics Research Center(纳米电子学研究中心)
Programmable Fermionic Quantum Processors with Globally Controlled Lattices
Institute for Theoretical Physics, University of Innsbruck(因斯布鲁克大学理论物理研究所);Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences(奥地利科学院量子光学与量子信息研究所);Max Planck Institute of Quantum Optics(马克斯·普朗克量子光学研究所);Munich Center for Quantum Science and Technology (MCQST)(慕尼黑量子科学与技术中心)
Fast Quantum Interconnects via Neutral Atom Ensembles
Institute of Theoretical Physics, TU Wien(维也纳工业大学理论物理研究所);Institute of Quantum Electronics, Department of Physics, ETH Zürich(苏黎世联邦理工学院物理系量子电子学研究所);Quantum Center, ETH Zürich(苏黎世联邦理工学院量子中心);Laboratory for Nano and Quantum Technologies, Paul Scherrer Institut(保罗谢尔研究所纳米与量子技术实验室)
Strategic Plan for Neutral Atom Quantum Computation
Massachusetts Institute of Technology(麻省理工学院);Harvard University(哈佛大学);QuEra Computing Inc.(QuEra计算公司);Joint Center for Quantum Information and Computer Science, NIST/University of Maryland(量子信息与计算机科学联合中心,美国国家标准与技术研究院/马里兰大学);Weizmann Institute of Science(魏茨曼科学研究所);University of California, Los Angeles(加利福尼亚大学洛杉矶分校);University of Wisconsin–Madison(威斯康星大学麦迪逊分校);University of California Santa Barbara(加利福尼亚大学圣塔芭芭拉分校);Université Paris-Saclay(巴黎萨克雷大学)