ITP OpenIR  > 理论物理所2014年知识产出
High-fidelity quantum memory utilizing inhomogeneous nuclear polarization in a quantum dot
Ding, WK; Shi, AQ; You, JQ; Zhang, WX; Zhang, WX (reprint author), Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China.
2014
发表期刊PHYSICAL REVIEW B
ISSN1098-0121
卷号90期号:23页码:235421
摘要We numerically investigate the encoding and retrieval processes for quantum memory realized in a semiconductor quantum dot by focusing on the effect of inhomogeneously polarized nuclear spins whose polarization depends on the local hyperfine coupling strength. We find that the performance of quantum memory is significantly improved by inhomogeneous nuclear polarization, as compared with homogeneous nuclear polarization. Moreover, the narrower the nuclear polarization distribution is, the better is the performance of the quantum memory. We ascribe the improvement in performance to the full harnessing of the highly polarized and strongly coupled nuclear spins by carefully studying the entropy change of individual nuclear spins during the encoding process. Our results shed light on the implementation of quantum memory in a quantum dot.
部门归属[Ding, Wenkui
关键词Spin Electron Field
学科领域Physics
资助者National Basic Research Program of China [2013CB922003, 2014CB921401]; National Natural Science Foundation of China [11275139, 91121015]; NSAF Grant [U1330201]; Fundamental Research Funds for the Central Universities ; National Basic Research Program of China [2013CB922003, 2014CB921401]; National Natural Science Foundation of China [11275139, 91121015]; NSAF Grant [U1330201]; Fundamental Research Funds for the Central Universities ; National Basic Research Program of China [2013CB922003, 2014CB921401]; National Natural Science Foundation of China [11275139, 91121015]; NSAF Grant [U1330201]; Fundamental Research Funds for the Central Universities ; National Basic Research Program of China [2013CB922003, 2014CB921401]; National Natural Science Foundation of China [11275139, 91121015]; NSAF Grant [U1330201]; Fundamental Research Funds for the Central Universities
DOI10.1103/PhysRevB.90.235421
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收录类别SCI
语种英语
资助者National Basic Research Program of China [2013CB922003, 2014CB921401]; National Natural Science Foundation of China [11275139, 91121015]; NSAF Grant [U1330201]; Fundamental Research Funds for the Central Universities ; National Basic Research Program of China [2013CB922003, 2014CB921401]; National Natural Science Foundation of China [11275139, 91121015]; NSAF Grant [U1330201]; Fundamental Research Funds for the Central Universities ; National Basic Research Program of China [2013CB922003, 2014CB921401]; National Natural Science Foundation of China [11275139, 91121015]; NSAF Grant [U1330201]; Fundamental Research Funds for the Central Universities ; National Basic Research Program of China [2013CB922003, 2014CB921401]; National Natural Science Foundation of China [11275139, 91121015]; NSAF Grant [U1330201]; Fundamental Research Funds for the Central Universities
WOS记录号WOS:000346374900005
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15543
专题理论物理所2014年知识产出
通讯作者Zhang, WX (reprint author), Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China.
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Ding, WK,Shi, AQ,You, JQ,et al. High-fidelity quantum memory utilizing inhomogeneous nuclear polarization in a quantum dot[J]. PHYSICAL REVIEW B,2014,90(23):235421.
APA Ding, WK,Shi, AQ,You, JQ,Zhang, WX,&Zhang, WX .(2014).High-fidelity quantum memory utilizing inhomogeneous nuclear polarization in a quantum dot.PHYSICAL REVIEW B,90(23),235421.
MLA Ding, WK,et al."High-fidelity quantum memory utilizing inhomogeneous nuclear polarization in a quantum dot".PHYSICAL REVIEW B 90.23(2014):235421.
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