Optical quantum memories, which store and preserve the quantum state of photons, rely on a coherent mapping of the photonic state onto matter states that are optically accessible. Here we outline and characterize schemes to map the state of photons onto long-lived but optically-inaccessible collective states of noble-gas spins. The mapping employs coherent spin-exchange interaction arising from random collisions with alkali vapor. We propose efficient storage strategies in two operating regimes and analyze their performance for several proposed experimental configurations.
Optimal Strategies for Optical Quantum Memories Using Long-Lived Noble-Gas Spins
Cornell University（康奈尔大学）；Weizmann Institute of Science（魏茨曼科学研究所）；Max-Planck-Institut für Quantenoptik（马克斯·普朗克量子光学研究所）；Ludwig-Maximilians-Universität München（慕尼黑路德维希-马克西米利安大学）；Harvard-MIT Center for Ultracold Atoms（哈佛-麻省理工学院超冷原子中心）；Harvard University（哈佛大学）；Joint Quantum Institute and Joint Center for Quantum Information and Computer Science, NIST/University of Maryland（联合量子研究所和联合量子信息与计算机科学中心，美国国家标准与技术研究院/马里兰大学）
Analytical model for polarization transfer during gas-phase collision events in spin-exchange optical pumping: Spin-$\frac{1}{2}$ $^{129}$Xe versus spin-$\frac{3}{2}$ $^{131}$Xe
Optimal limits on weak integrability breaking and protected thermal memory near qutrit exchange
Nanophotonics and Biophotonics Key Laboratory of Jilin Province, School of Physics, Changchun University of Science and Technology（吉林省纳米光子学与生物光子学重点实验室，长春理工大学物理学院）
A Memory-Magic Exchange Law in Streaming Clifford+T Compilation
School of Physics, Xidian University（西安电子科技大学物理学院）；Key Laboratory of Intelligent Perception and Image Understanding of Ministry of Education of China, Collaborative Innovation Center of Quantum Information of Shaanxi Province, Institute of Interdisciplinary Quantum Science and Technology (IIQST), School of Artificial Intelligence, Xidian University（西安电子科技大学人工智能学院、量子科学与技术交叉研究所、陕西省量子信息协同创新中心、教育部智能感知与图像理解重点实验室）；Shenzhen International Quantum Academy（深圳国际量子研究院）；Shenzhen Branch, Hefei National Laboratory（合肥国家实验室深圳分部）
