Qubit fidelity of a single atom transferred among the sites of a ring optical lattice

CORC > 武汉物理与数学研究所 > 中国科学院武汉物理与数学研究所 > 原子分子光物理研究部

	Qubit fidelity of a single atom transferred among the sites of a ring optical lattice
	Yu, Shi 1,2,3; Xu, Peng 1,2; Liu, Min 1,2; He, Xiaodong 1,2; Wang, Jin 1,2; Zhan, Mingsheng 1,2
刊名	PHYSICAL REVIEW A
	2014-12-22
卷号	90 期号:6
英文摘要	We demonstrate the transfer of a single atom in a ring optical lattice with the aid of an auxiliary moving tweezer and investigate the influences on fidelity of the qubit encoded in the atom. When the tweezer has deeper trap depth and moves across the lattice, it is observed that an atom in one site follows the movement. The transfer efficiency of one atom to the destination site reaches up to 95%. This scheme is suitable for scalable quantum registers because of no influence on the other sites. We obtain atomic qubit fidelity during the transfer process by using quantum state tomography. Extracted fidelity indicates that the eigenstate is well preserved, while the superposition state is influenced. In combination with spin-echo measurement, dephasing mechanisms in this process are analyzed and discussed in detail. Loss of qubit fidelity is found to result from heating effects induced by this process and pointing instabilities of the trap laser. Our results pave the way for quantum computation with single atoms trapped in a scalable optical lattice.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Optics ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]	Optics ; Physics
关键词[WOS]	QUANTUM INFORMATION ; MOTT INSULATOR ; CONTROLLED COLLISIONS ; ULTRACOLD ATOMS ; NEUTRAL ATOMS ; ION-TRAP ; ENTANGLEMENT ; TRANSPORT
收录类别	SCI
语种	英语
WOS记录号	WOS:000346824600008
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/1493]
专题	武汉物理与数学研究所_原子分子光物理研究部
作者单位	1.Chinese Acad Sci, Wuhan Natl Lab Optoelect, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 2.Chinese Acad Sci, Ctr Cold Atom Phys, Wuhan 430071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yu, Shi,Xu, Peng,Liu, Min,et al. Qubit fidelity of a single atom transferred among the sites of a ring optical lattice[J]. PHYSICAL REVIEW A,2014,90(6).
APA	Yu, Shi,Xu, Peng,Liu, Min,He, Xiaodong,Wang, Jin,&Zhan, Mingsheng.(2014).Qubit fidelity of a single atom transferred among the sites of a ring optical lattice.PHYSICAL REVIEW A,90(6).
MLA	Yu, Shi,et al."Qubit fidelity of a single atom transferred among the sites of a ring optical lattice".PHYSICAL REVIEW A 90.6(2014).