85Rb和87Rb双磁光阱的同时实现及特性研究

J4 ›› 2013, Vol. 30 ›› Issue (2): 169-174.

85Rb和87Rb双磁光阱的同时实现及特性研究

郝恺¹,周林¹,汤彪¹,彭文翠¹,杨威¹,王谨²,詹明生¹

1中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室，湖北武汉 430071； 2 中国科学院冷原子物理中心，湖北武汉 430071； 3中国科学院研究生院，北京 100049

收稿日期:2012-04-27 修回日期:2012-05-31 出版日期:2013-03-28 发布日期:2013-03-14
通讯作者: 詹明生(1961- ) 研究员，研究方向为冷原子物理与量子信息。 E-mail:mszhan@wipm.ac.cn
作者简介:郝恺(1987-)，研究生，主要从事冷原子物理实验研究工作，E-mail: haokai@wipm.ac.cn
基金资助:
国家重点基础研究发展规划课题（2010CB832805）; 国家自然科学基金（11074281）

Realization of a dual magneto-optical trap of 85Rb and 87Rb

1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071， China； 2 Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071， China； 3 Graduate University, Chinese Academy of Sciences, Beijing 100049， China

Received:2012-04-27 Revised:2012-05-31 Published:2013-03-28 Online:2013-03-14

摘要/Abstract

摘要： 双磁光阱的同步实现是利用冷原子干涉仪检验等效原理的重要实验基础之一。我们采用高频声光调制移频的方案获得了冷却囚禁85Rb和87Rb两种原子的激光，进而同步实现了两种原子的磁光阱。在此基础上，研究了双磁光阱中原子数与冷却光参数的关系，优化了实验参数，双磁光阱中两种原子的数目均达到109。

关键词: 量子光学, 双磁光阱, 激光冷却, 冷原子干涉仪, 等效原理检验

Abstract: Synchronous realization of two magneto-optical traps is one of the fundamental technologies of testing Einstein’s Equivalence Principle by using atom interferometers. We used high frequency acousto-optic modulators to achieve the lasers for trapping 85Rb and 87Rb simoutaneously, and realized a dual magneto-optical trap of 85Rb and 87Rb. Based on the dual magneto-optical trap, the dependence of atom numbers in the dual magneto-optical trap on parameters of cooling laser are investigated, and optimized experimental data are obtained. The number of both species reaches to 109 in the dual magneto-optical trap.

Key words: quantum optics, dual magneto-optical trap, laser cooling, cold atom interferometer, equivalence principle test

中图分类号:

O431.2

郝恺周林汤彪彭文翠杨威王谨詹明生. 85Rb和87Rb双磁光阱的同时实现及特性研究[J]. J4, 2013, 30(2): 169-174.

参考文献

[1] Williams J. G., Turyshev S. G. and Boggs. D. H, Progress in Lunar Laser Ranging Tests of Relativistic Gravity [J]. Phys. Rev. Lett., 2004, 93(26): 261101
[2] Schlamminger S., Choi K. Y., Wagner T. A., Gundlach J. H., and Adelberger E. G., Test of the Equivalence Principle Using a Rotating Torsion Balance [J]. Phys. Rev. Lett., 2008, 100(4): 041101
[3] Peters A., Chung K.Y., Chu S., Measurement of gravitational acceleration by dropping atoms [J]. Nature, 1999, 400(6747):849-852
[4] McGuirk J.M., Foster G.T., Fixler J.B., et al. Sensitive absolute-gravity gradiometry using atom interferometry [J]. Phys. Rev. A, 2002, 65(3):33608
[5] Gustavson T.L., Landragin A., Kasevich M.A. Rotation sensing with a dual atom-interferometer Sagnacgyroscope [J]. Class. Quantum Grav.，2000,17(12):2385- 2398
[6] Fixler J.B., Foster G.T., McGuirk J.M., et al. Atom interferometer measurement of the newtonian constant of gravity [J]. Science, 2007, 315(5808):74-77
[7] Lamporesi G., Bertoldi A., Cacciapuoti L., et al. Determination of the newtonian gravitational constant using atom interferometry [J]. Phys. Rev. Lett., 2008, 100(5): 050801
[8] Fray S., Diez C A., H?nsch T W. and Weitz M., Atomic Interferometer with Amplitude Gratings of Light and Its Applications to Atom Based Tests of the Equivalence Principle [J]. Phys. Rev. Lett., 2004, 93(24): 240404
[9] Weiss D.S., Young B.C., and Chu S. Precision-measurement of h/m(cs) based on photon recoil using laser-cooled atoms and atomic interferometry [J]. Appl. Phys. B, 1994, 59(3):217-256
[10] Dimopoulos S., Graham P. W., Hogan J. M. and Kasevich M. A., Testing General Relativity with Atom Interferometry [J]. Phys. Rev. Lett., 2007, 98(11):111102
[11] Dimopoulos S., Graham P. W., Hogan J. M. and Kasevich M. A., Atomic gravitational wave interferometric sensor [J]. Phys. Rev. D, 2008, 78(12):122002
[12] Zhou L., Xiong Z. Y., Yang W., Tang B., Peng W. C., Hao K., Li R. B., Liu M., Wang J., Zhan M. S., Development of an atom gravimeter and status of the 10-meter atom interferometer for precision gravity measurement [J]. Gen. Relativ. Gravit., 2011, 43(7):1931–1942
[13] Rabb E. L., Prentiss M., Cable A. et al. Trapping of neutral sodium atoms with radiation pressure [J]. Phys. Rev. Lett., 1987, 59 (23) :2631-2634
[14] Wang P., Li R. B., Yan H., Wang J., Zhan M. S., Demonstration of a Sagnac Type Cold Atom Interferometer with Stimulated Raman Transitions [J]. Chin. Phys. Lett., 2007, 24(1): 27-30
[15] Zhou L., Xiong Z. Y., Yang W., Tang B., Wang Y. B., Peng W. C., Xu P., Wang J., Zhan M. S., Measurement of Local Gravity via a Cold Atom Interferometer [J]. Chin. Phys. Lett., 2011, 28(1): 013701
[16] Stean A. M., Chowdhury M., and Foot C. J., Radiation force in a magneto-optical trap [J]. J. Opt. Soc. Am. B, 1992, 9(12): 2142–2158
[17] Monroe C, Swann W, Robinson H, Wieman C Very cold trapped atoms in a vapor cell [J]. Phys. Rev. Lett., 1990, 65(5): 1571-1574
[18] Suptitz W., Wokurka G., Strauch F., Kohns P., and Ertmer W., Simultaneous cooling and trapping of 85Rb and 87Rb in a magneto-optical trap [J]. Opt. Lett., 1994, 19 (19):1580-1582
[19] Lindquist K., Stephens M., and Wieman C., Experimental and theoretical study of the vapor-cell Zeeman optical trap [J]. Phys. Rev. A, 1992, 46(7):4082-4090