Efficient quantum memory of orbital angular momentum qubits in cold atoms

doi:10.1088/2058-9565/ac120a

	Efficient quantum memory of orbital angular momentum qubits in cold atoms
	Wang, Chengyuan 1; Yu, Ya 1; Chen, Yun 1; Cao, Mingtao 2; Wang, Jinwen 1,3; Yang, Xin 1; Qiu, Shuwei 1; Wei, Dong 1; Gao, Hong 1; Li, Fuli 1
刊名	QUANTUM SCIENCE AND TECHNOLOGY
	2021-10-01
卷号	6 期号:4 页码:6
关键词	quantum memory orbital angular momentums quantum information
ISSN号	2058-9565
DOI	10.1088/2058-9565/ac120a
英文摘要	The spatial modes of light, carrying a quantized amount of orbital angular momentum (OAM), is one of the excellent candidates that provides access to high-dimensional quantum states, which essentially makes it promising towards building high-dimensional quantum networks. Quantum memory with efficiency above 50% is an essential condition for beating the no-cloning limit or in the one-way quantum computation. However, up till now, the highest storage efficiencies achieved for OAM states are below 30%, which is an obstacle towards practical applications. In this paper, we report the storage and retrieval of photonic qubits encoded with OAM state in an elongated cold rubidium atomic ensemble, achieving a storage efficiency around 65% with an average conditional fidelity above 98%. Our work constitutes an efficient node that is needed towards high dimensional and large scale quantum networks.\/-
资助项目	National Natural Science Foundation of China (NSFC)[11774286] ; National Natural Science Foundation of China (NSFC)[92050103] ; National Natural Science Foundation of China (NSFC)[11534008] ; National Natural Science Foundation of China (NSFC)[12033007] ; National Natural Science Foundation of China (NSFC)[61875205]
WOS关键词	STORAGE
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000675223200001
资助机构	National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC)
内容类型	期刊论文
源URL	[http://210.72.145.45/handle/361003/10656]
专题	中国科学院国家授时中心
通讯作者	Cao, Mingtao; Gao, Hong
作者单位	1.Xi An Jiao Tong Univ, Sch Phys, Shaanxi Prov Key Lab Quantum Informat & Quantum O, MOE Key Lab Nonequilibrium Synth & Modulat Conden, Xian 710049, Peoples R China 2.Chinese Acad Sci, Natl Time Serv Ctr, Key Lab Time & Frequency Primary Stand, Xian 710600, Peoples R China 3.Univ Glasgow, Sch Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland
推荐引用方式 GB/T 7714	Wang, Chengyuan,Yu, Ya,Chen, Yun,et al. Efficient quantum memory of orbital angular momentum qubits in cold atoms[J]. QUANTUM SCIENCE AND TECHNOLOGY,2021,6(4):6.
APA	Wang, Chengyuan.,Yu, Ya.,Chen, Yun.,Cao, Mingtao.,Wang, Jinwen.,...&Li, Fuli.(2021).Efficient quantum memory of orbital angular momentum qubits in cold atoms.QUANTUM SCIENCE AND TECHNOLOGY,6(4),6.
MLA	Wang, Chengyuan,et al."Efficient quantum memory of orbital angular momentum qubits in cold atoms".QUANTUM SCIENCE AND TECHNOLOGY 6.4(2021):6.