Comparison of single-neutral-atom qubit between in bright trap and in dark trap

doi:10.1088/1674-1056/28/2/023701

中国物理B ›› 2019, Vol. 28 ›› Issue (2): 23701-023701.doi: 10.1088/1674-1056/28/2/023701

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇下一篇

Comparison of single-neutral-atom qubit between in bright trap and in dark trap

Ya-Li Tian(田亚莉), Zhi-Hui Wang(王志辉), Peng-Fei Yang(杨鹏飞), Peng-Fei Zhang(张鹏飞), Gang Li(李刚), Tian-Cai Zhang(张天才)

1 State Key Laboratory of Quantum Optics and Quantum Optics Devices, and Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China;
2 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China

收稿日期:2018-10-11 修回日期:2018-12-03 出版日期:2019-02-05 发布日期:2019-02-05
通讯作者: Gang Li, Tian-Cai Zhang E-mail:gangli@sxu.edu.cn;tczhang@sxu.edu.cn
基金资助:
Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0304502) and the National Natural Science Foundation of China (Grant Nos. 11634008, 11674203, 11574187, and 61227902), and the Fund for Shanxi “1331 Project” Key Subjects Construction, Shanxi Province, China.

Comparison of single-neutral-atom qubit between in bright trap and in dark trap

Ya-Li Tian(田亚莉)¹, Zhi-Hui Wang(王志辉)¹, Peng-Fei Yang(杨鹏飞)¹, Peng-Fei Zhang(张鹏飞)^1,2, Gang Li(李刚)^1,2, Tian-Cai Zhang(张天才)^1,2

1 State Key Laboratory of Quantum Optics and Quantum Optics Devices, and Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China;
2 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China

Received:2018-10-11 Revised:2018-12-03 Online:2019-02-05 Published:2019-02-05
Contact: Gang Li, Tian-Cai Zhang E-mail:gangli@sxu.edu.cn;tczhang@sxu.edu.cn
Supported by:
Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0304502) and the National Natural Science Foundation of China (Grant Nos. 11634008, 11674203, 11574187, and 61227902), and the Fund for Shanxi “1331 Project” Key Subjects Construction, Shanxi Province, China.

摘要/Abstract

摘要：

A single neutral atom is one of the most promising candidates to encode a quantum bit (qubit). In a real experiment, a single neutral atom is always confined in a micro-sized far off-resonant optical trap (FORT). There are generally two types of traps:red-detuned trap and blue-detuned trap. We experimentally compare the qubits encoded in “clock states” of single cesium atoms confined separately in either 1064-nm red-detuned (bright) trap or 780-nm blue-detuned (dark) trap:both traps have almost the same trap depth. A longer lifetime of 117 s and a longer coherence time of about 10 ms are achieved in the dark trap. This provides a direct proof of the superiority of the dark trap over the bright trap. The measures to further improve the coherence are discussed.

关键词: single qubit, laser trapping, coherence time

Abstract:

Key words: single qubit, laser trapping, coherence time

中图分类号: (Atoms in optical lattices)

37.10.Jk

32.70.Cs (Oscillator strengths, lifetimes, transition moments) 34.80.Pa (Coherence and correlation)

田亚莉, 王志辉, 杨鹏飞, 张鹏飞, 李刚, 张天才. Comparison of single-neutral-atom qubit between in bright trap and in dark trap[J]. 中国物理B, 2019, 28(2): 23701-023701.

Ya-Li Tian(田亚莉), Zhi-Hui Wang(王志辉), Peng-Fei Yang(杨鹏飞), Peng-Fei Zhang(张鹏飞), Gang Li(李刚), Tian-Cai Zhang(张天才). Comparison of single-neutral-atom qubit between in bright trap and in dark trap[J]. Chin. Phys. B, 2019, 28(2): 23701-023701.

参考文献 24

[1]	Nielsen M A and Chuang I L 2000 Quantum Compututation and Quantum Information, 10th Edn. (New York: Cambridge University Press) p. 2
[2]	Isenhower L, Urban E, Zhang X L, Gill A T, Henage T, Johnson T A, Walker T G and Saffman M 2010 Phys. Rev. Lett. 104 010503 doi: 10.1103/PhysRevLett.104.010503
[3]	Grimm R, Weidemller M and Ovchinnikov Y B 2000 Adv. At. Mol. Opt. Phys. 42 95 doi: 10.1016/S1049-250X(08)60186-X
[4]	Schlosser N, Reymond G, Protsenko I and Grangier P 2001 Nature 411 1024 doi: 10.1038/35082512
[5]	Miller J D, Cline R A and Heinzen D J 1993 Phys. Rev. A 47 R4567
[6]	Wang Z H, Li G, Tian Y L and Zhang T C 2014 Front. Phys. 9 634 doi: 10.1007/s11467-014-0442-0
[7]	Puppe T, Schuster I, Grothe A, Kubanek A, Murr K, Pinkse P W H and Rempe G 2007 Phys. Rev. Lett. 99 013002 doi: 10.1103/PhysRevLett.99.013002
[8]	Li G, Zhang S, Isenhower L, Maller K and Saffman M 2012 Opt. Lett. 37 851 doi: 10.1364/OL.37.000851
[9]	Xu P, He X D, Wang J and Zhan M S 2010 Opt. Lett. 35 2164 doi: 10.1364/OL.35.002164
[10]	Gibbons M J, Kim S Y, Fortier K M, Ahmadi P and Chapman M S 2008 Phys. Rev. A 78 043418 doi: 10.1103/PhysRevA.78.043418
[11]	Kuhr S, Alt W, Schrader D, Dotsenko I, Miroshnychenko Y, Rauschenbeutel A and Meschede D 2005 Phys. Rev. A 72 023406 doi: 10.1103/PhysRevA.72.023406
[12]	Rosenbusch P, Ghezali S, Dzuba V A, Flambaum V V, Beloy K and Derevianko A 2009 Phys. Rev. A 79 013404 doi: 10.1103/PhysRevA.79.013404
[13]	Derevianko A 2010 Phys. Rev. Lett. 105 033002 doi: 10.1103/PhysRevLett.105.033002
[14]	Carr A W and Saffman M 2016 Phys. Rev. Lett. 117 150801 doi: 10.1103/PhysRevLett.117.150801
[15]	Wang J L, Li G, Tian Y L and Zhang T C 2015 J. Quantum Opt. 21 74 (in Chinese)
[16]	Schlosser N, Reymond G and Grangier P 2002 Phys. Rev. Lett. 89 023005 doi: 10.1103/PhysRevLett.89.023005
[17]	DePue M T, McCormick C, Winoto S L, Oliver S and Weiss D S 1999 Phys. Rev. Lett. 82 2262 doi: 10.1103/PhysRevLett.82.2262
[18]	Grünzweig T, Hilliard A, McGovern M and Andersen M F 2010 Nature 6 951
[19]	Carpentier A V, Fung Y H, Sompet P, Hilliard A J, Walker G T and Andersen M F 2013 Laser Phys. Lett. 10 125501 doi: 10.1088/1612-2011/10/12/125501
[20]	Diao W T, He J, Liu B, Wang J Y, Wang J M 2014 Acta Phys. Sin. 63 023701 (in Chinese)
[21]	Steane A M, Chowdhury M and Foot C J 1992 J. Opt. Soc. Am. B 9 2142 doi: 10.1364/JOSAB.9.002142
[22]	Gehm M E, O'Hara K M, Savard T A and Thomas J E 1998 Phys. Rev. A 58 3914 doi: 10.1103/PhysRevA.58.3914
[23]	Tuchendler C, Lance A M, Browaeys A, Sortais Y R P and Grangier P 2008 Phys. Rev. A 78 033425 doi: 10.1103/PhysRevA.78.033425
[24]	Yang J H, He X D, Guo R J, Xu P, Wang K P, Sheng C, Liu M, Wang J, Derevianko A and Zhan M S 2016 Phys. Rev. Lett. 117 123201 doi: 10.1103/PhysRevLett.117.123201

Comparison of single-neutral-atom qubit between in bright trap and in dark trap

Comparison of single-neutral-atom qubit between in bright trap and in dark trap

RichHTML

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献 24

相关文章 7

Metrics

本文评价

推荐阅读 0

[1]	Xi Huang(黄曦), Yan Chang(昌燕), Wen Cheng(程稳), Min Hou(侯敏), and Shi-Bin Zhang(张仕斌). Quantum private comparison of arbitrary single qubit states based on swap test[J]. 中国物理B, 2022, 31(4): 40303-040303.
[2]	Jing-Jing Xia(夏京京), Xiao-Tong Lu(卢晓同), and Hong Chang(常宏). Interrogation of optical Ramsey spectrum and stability study of an ⁸⁷Sr optical lattice clock[J]. 中国物理B, 2022, 31(3): 34209-034209.
[3]	张福刚, 李永明. Quantum uncertainty relations of quantum coherence and dynamics under amplitude damping channel[J]. 中国物理B, 2018, 27(9): 90301-090301.
[4]	张慧, 李涛, 尹亚玲, 李兴佳, 夏勇, 印建平. Microtrap on a concave grating reflector for atom trapping[J]. 中国物理B, 2016, 25(8): 87802-087802.
[5]	嵇英华, 赖慧芳, 蔡十华, 王资生. Controlled decoherence of three-level rf-SQUID qubit with asymmetric potential[J]. 中国物理B, 2010, 19(3): 30310-030310.
[6]	嵇英华, 徐林. Controlled decoherence of floating flux qubits[J]. 中国物理B, 2010, 19(11): 110305-110310.
[7]	王艳辉, 方卯发. Preparation of arbitrary n-particle d-dimensional superposition states using only single qubit operations and CNOT gates[J]. 中国物理B, 2004, 13(10): 1644-1648.