Investigation of ultracold atoms and molecules in a dark magneto-optical trap

doi:10.1088/1674-1056/21/11/113402

中国物理B ›› 2012, Vol. 21 ›› Issue (11): 113402-113402.doi: 10.1088/1674-1056/21/11/113402

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Investigation of ultracold atoms and molecules in a dark magneto-optical trap

汪丽蓉, 姬中华, 元晋鹏, 杨艳, 赵延霆, 马杰, 肖连团, 贾锁堂

State Key Laboratory of Quantum Optics and Quantum Optics Devices, Laser Spectroscopy Laboratory, Shanxi University, Taiyuan 030006, China

收稿日期:2012-03-20 修回日期:2012-05-23 出版日期:2012-10-01 发布日期:2012-10-01
基金资助:
Project supported by the National Basic Research Program of China (Grant No. 2012CB921603), the International Science & Technology Cooperation Program of China (Grant No. 2011DFA12490), the National Natural Science Foundation of China (Grant Nos. 10934004, 60978001, 60978018, 60808009, 61078001, and 61008012), and the Natural Science Foundation of Shanxi Province, China (Grant No. 2011011004).

Investigation of ultracold atoms and molecules in a dark magneto-optical trap

Wang Li-Rong (汪丽蓉), Ji Zhong-Hua (姬中华), Yuan Jin-Peng (元晋鹏), Yang Yan (杨艳), Zhao Yan-Ting (赵延霆), Ma Jie (马杰), Xiao Lian-Tuan (肖连团), Jia Suo-Tang (贾锁堂 )

State Key Laboratory of Quantum Optics and Quantum Optics Devices, Laser Spectroscopy Laboratory, Shanxi University, Taiyuan 030006, China

Received:2012-03-20 Revised:2012-05-23 Online:2012-10-01 Published:2012-10-01
Contact: Wang Li-Rong E-mail:wlr@sxu.edu.cn
Supported by:
Project supported by the National Basic Research Program of China (Grant No. 2012CB921603), the International Science & Technology Cooperation Program of China (Grant No. 2011DFA12490), the National Natural Science Foundation of China (Grant Nos. 10934004, 60978001, 60978018, 60808009, 61078001, and 61008012), and the Natural Science Foundation of Shanxi Province, China (Grant No. 2011011004).

摘要/Abstract

摘要： In this paper, ultracold atoms and molecules in a dark magneto-optical trap (MOT) are studied via depumping the cesium cold atoms into the dark hyperfine ground state. The collision rate is reduced to 0.45 s^-1 and the density of the atoms is increased to 5.6× 10¹¹ cm^-3 when the fractional population of the atoms in the bright hyperfine ground state is as low as 0.15. The vibrational spectra of the ultracold cesium molecules are also studied in a standard MOT and in a dark MOT separately. The experimental results are analyzed by using the perturbative quantum approach.

关键词: cold atom, dark magneto-optical trap, photoassociation

Abstract: In this paper, ultracold atoms and molecules in a dark magneto-optical trap (MOT) are studied via depumping the cesium cold atoms into the dark hyperfine ground state. The collision rate is reduced to 0.45 s^-1 and the density of the atoms is increased to 5.6× 10¹¹ cm^-3 when the fractional population of the atoms in the bright hyperfine ground state is as low as 0.15. The vibrational spectra of the ultracold cesium molecules are also studied in a standard MOT and in a dark MOT separately. The experimental results are analyzed by using the perturbative quantum approach.

Key words: cold atom, dark magneto-optical trap, photoassociation

中图分类号: (Elastic; ultracold collisions)

34.50.Cx

37.10.Gh (Atom traps and guides) 33.15.Mt (Rotation, vibration, and vibration-rotation constants) 33.80.-b (Photon interactions with molecules)

汪丽蓉, 姬中华, 元晋鹏, 杨艳, 赵延霆, 马杰, 肖连团, 贾锁堂 . Investigation of ultracold atoms and molecules in a dark magneto-optical trap[J]. 中国物理B, 2012, 21(11): 113402-113402.

Wang Li-Rong (汪丽蓉), Ji Zhong-Hua (姬中华), Yuan Jin-Peng (元晋鹏), Yang Yan (杨艳), Zhao Yan-Ting (赵延霆), Ma Jie (马杰), Xiao Lian-Tuan (肖连团), Jia Suo-Tang (贾锁堂 ). Investigation of ultracold atoms and molecules in a dark magneto-optical trap[J]. Chin. Phys. B, 2012, 21(11): 113402-113402.

参考文献 18

[1]	Jiang K J, Li K, Wang J and Zhan M S 2006 Acta Phys. Sin. 55 125 (in Chinese)
[2]	Qiu Y, He J, Wang Y H, Wang J, Zhang T C and Wang J M 2008 Acta Phys. Sin. 57 6227 (in Chinese)
[3]	Wu J Z, Jie M, Zhang Y C, Li Y Q, Wang L R, Zhao Y T, Chen G, Xiao L T and Jia S T 2011 Phys. Chem. Chem. Phys. 13 18921
[4]	Zhang H S, Ji Z H, Yuan J P, Zhao Y T, Ma J, Wang L R, Xiao L T and Jia S T 2011 Chin. Phys. B 20 123702
[5]	Ke M, Yan B, Cheng F and Wang Y Z 2009 Chin. Phys. B 18 4823
[6]	Hudson J J, Tarbutt M R and Hinds E A2002 Phys. Rev. Lett. 88 067901
[7]	Rabl P, DeMille D, Doyle J M, Lukin M D, Schoelkopf R J and Zoller P 2006 Phys. Rev. Lett. 97 033003
[8]	Burovski E, Kozik E, Prokof'ev N, Svistunov B and Troyer M 2008 Phys. Rev. Lett. 101 090402
[9]	Ketterle W, Davis K B, Joffe M A, Martin A and Partchard D 1993 Phys. Rev. Lett. 70 2253
[10]	Anderson M H, Petrich W, Ensher J R and Cornell E A 1994 Phys. Rev. A 50 R3597
[11]	Permyakova O I, Yakovlev A V and Chapovsky P L 2008 Quantum Electronics 38 884
[12]	Singh S, Tiwari V B and Rawat H S 2010 Journal of Experimental and Theoretical Physics 111 371
[13]	Wang L R, Ma J, Zhang L J Xiao L T and Jia S T 2006 Acta Phys. Sin. 15 1268 (in Chinese)
[14]	JI Z H, Zhang H S, Wu J Z, Yuan J P, Zhao Y T, Ma J, Wang L R, Xiao L T and Jia S T 2010 Chin. Phys. Lett. 28 08371
[15]	Marcassa L, Bagnato V, Wang Y, Tsao C and Weiner J 1993 Phys. Rev. A 47 R4563
[16]	Monroe C, Swann W, Robinson H and Wieman C 1990 Phys. Rev. Lett. 65 1571
[17]	Lignier H, Fioretti A, Horchani R, Drag C, Bouloufa N, Alliegrini M, Dulieu O, Pruvost L, Pillet P and Comparat D 2011 Phys. Chem. Chem. Phys. 13 18910
[18]	Pillet P, Crubellier A, Bleton A, Dulieu O, Nosbaum P and Masnou-Seeuws F 1997 J. Phys. B: At. Mol. Opt. Phys. 30 2801

Investigation of ultracold atoms and molecules in a dark magneto-optical trap

Investigation of ultracold atoms and molecules in a dark magneto-optical trap

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献 18

相关文章 15

Metrics

本文评价

推荐阅读 0

[1]	Zhen Zhang(张镇), Jing-Feng Xiang(项静峰), Bin Xu(徐斌), Pan Feng(冯盼), Guang-Wei Sun(孙广伟),Yi-Ming Meng(孟一鸣), Si-Min-Da Deng(邓思敏达), Wei Ren(任伟),Jin-Yin Wan(万金银), and De-Sheng Lü(吕德胜). Integrated, reliable laser system for an ⁸⁷Rb cold atom fountain clock[J]. 中国物理B, 2023, 32(1): 13202-013202.
[2]	Xiaochi Liu(刘小赤), Ning Ru(茹宁), Junyi Duan(段俊毅), Peter Yun(云恩学), Minghao Yao(姚明昊), and Jifeng Qu(屈继峰). High-performance coherent population trapping clock based on laser-cooled atoms[J]. 中国物理B, 2022, 31(4): 43201-043201.
[3]	荆坚, 马瑶瑶, 张秋月, 王青, 董世海. Simulation of anyons by cold atoms with induced electric dipole moment[J]. 中国物理B, 2020, 29(8): 80303-080303.
[4]	武寄洲, 李玉清, 刘文良, 李鹏, 王晓锋, 陈鹏, 马杰, 肖连团, 贾锁堂. Enhancement of the photoassociation of ultracold atoms via a non-resonant magnetic field[J]. 中国物理B, 2020, 29(8): 83303-083303.
[5]	肖波, 王宣恺, 郑永光, 杨雨萌, 章维勇, 苏国贤, 李梦达, 江晓, 苑震生. Generating two-dimensional quantum gases with high stability[J]. 中国物理B, 2020, 29(7): 76701-076701.
[6]	王月明, 靳祯. Landau-like quantized levels of neutral atom induced by a dark-soliton shaped electric field[J]. 中国物理B, 2020, 29(1): 10303-010303.
[7]	于明圆, 孟艳玲, 叶美凤, 王鑫, 欧阳鑫川, 万金银, 肖玲, 成华东, 刘亮. Development of the integrated integrating sphere cold atom clock[J]. 中国物理B, 2019, 28(7): 70602-070602.
[8]	张茜, 杨飞, 冯子桐, 赵洁珺, 魏芳, 蔡海文, 瞿荣辉. Phase-related noise characteristics of 780 nm band single-frequency lasers used in the cold atomic clock[J]. 中国物理B, 2019, 28(7): 74209-074209.
[9]	李鹏伟, 李玉清, 冯国胜, 武寄洲, 马杰, 肖连团, 贾锁堂. Effect of external magnetic field on the shift of resonant frequency in photoassociation of ultracold Cs atoms[J]. 中国物理B, 2019, 28(1): 13702-013702.
[10]	胡洁, 陈宇, 白伊秀, 何培松, 孙青, 纪安春. Corrections to atomic ground state energy due to interaction between atomic electric quadrupole and optical field[J]. 中国物理B, 2018, 27(4): 43202-043202.
[11]	王启宇, 冯金扬, 王少凯, 庄伟, 赵阳, 牟丽爽, 吴书清. Calibration of the superconducting gravimeter based on a cold atom absolute gravimeter at NIM[J]. 中国物理B, 2018, 27(12): 123701-123701.
[12]	赵国栋, 苏殿强, 姬中华, 孟腾飞, 赵延霆, 肖连团, 贾锁堂. Photoassociation spectra of ultracold ⁸⁵Rb₂ molecule in 0_u⁺ long range state near the 5S_1/2+5P_1/2 asymptote[J]. 中国物理B, 2017, 26(8): 83301-083301.
[13]	乐旭广, 刘淑娟, 吴飙, 熊宏伟. Matter wave interference of dilute Bose gases in the critical regime[J]. 中国物理B, 2017, 26(5): 50501-050501.
[14]	王玉, 岳大光, 周旭聪, 郭雅慧, 孟庆田. The effect of field modulation on the vibrational population of the photoassociated NaK and its dynamics[J]. 中国物理B, 2017, 26(4): 43202-043202.
[15]	王文浩, 刘文良, 武寄洲, 李玉清, 王晓锋, 刘艳艳, 马杰, 肖连团, 贾锁堂. Enhancement of signal-to-noise ratio of ultracold polar NaCs molecular spectra by phase locking detection[J]. 中国物理B, 2017, 26(12): 123701-123701.