Optimization of the light-induced-fluorescence signals of single atoms and efficient loading of single atoms into a magneto-optical trap

Wang Jie-Ying; Liu Bei; Diao Wen-Ting; Jin Gang; He Jun; Wang Jun-Min

doi:10.7498/aps.63.053202

Abstract

In our experiment, firstly, we carry out the loading of single atoms in the magneto-optical trap (MOT) by increasing the quadrupole magnetic field gradient, improving the background vacuum, and reducing the diameters of the cooling and trapping laser beams. Secondly, we get the single atomic fluorescence signal of a high signal-to-background ratio in the MOT by means of reducing the detuning of cooling light and increasing its intensity appropriately, and using the polarization spectroscopy locking technique to suppress the fluctuations of cooling laser. In addition, with the real-time feedback on quadrupole magnetic field gradient, we demonstrate a probability of loading single atoms in the MOT as high as 98%. We also measure the statistical properties of the single atomic fluorescence which is excited by continuous light in the MOT; the measured second-order correlation is g(2)( = 0) = 0.09.

Keywords:

Authors and contacts

1.
State Key Laboratory of Quantum Optics and Quantum Optics Devices (Shanxi University), and Institute of Opto-Electronics, Shanxi University, Taiyuan 030006
Funds: project supported by the National Basic Research Program of China (Grant No. 2012CB921601), the National Natural Science Foundation of China (Grant Nos. 11274213, 61205215, 61227902), the National Natural Science Foundation of Innovative Research Group Project (Grant No. 61121064), the Shanxi Scholarship Council of China (Grant No. 2012-015), and the Research Program for Sci Tech Star of Taiyuan, Shanxi Province, China (Grant No. 12024707).

References

[1]	Hu Z, Kimble H J 1994 Opt. Lett. 19 1888
[2]	Ruschewitz F, Bettermann D, Peng J L, Ertmer W 1996 Europhys. Lett. 34 651
[3]	Haubrich D, Schadwinkel H, Strauch F, Ueberholz B, Wynands R, Meschede D 1996 Europhys. Lett. 34 663
[4]	Willems P A, Boyd R A, Bliss J L, Libbrecht K G 1997 Phys. Rev. Lett. 78 1660
[5]	Hilland S B, McClelland J J 2003 Appl. Phys. Lett. 82 3128
[6]	Yoon S, Choi Y, Park S, Kim J, Lee J H, An K 2006 Appl. Phys. Lett. 88 211104
[7]	Wang J, He J, Qiu Y, Yang B D, Zhao J Y, Zhang T C, Wang J M 2008 Chin. Phys. B 17 2062
[8]	He J, Yang B D, Zhang T C, Wang J M 2011 J. Phys. D: Appl. Phys. 44 135102
[9]	He J, Yang B D, Zhang T C, Wang J M 2011 Chin. Phys. B 20 073701
[10]	He J 2011 Ph. D. Thesis (Shanxi: Shanxi University) (in Chinese) [何军 2011 博士学位论文(山西:山西大学)]
[11]	Thompson J D, Tiecke T G, Zibrov A S, Vuletic V, Lukin M D 2013 Phys. Rev. Lett. 110 133001
[12]	Haubrich D, Hope A, Meschede D 1993 Opt. Commun. 102 225
[13]	Foot C J 2005 Atomic Physics (Oxford: Clarendon Press) 180-181
[14]	Carmichael H J, Walls D F 1976 J. Phys. B: At. Mol. Phys. 9 1199

Cited By

[1]	Hu Z, Kimble H J 1994 Opt. Lett. 19 1888
[2]	Ruschewitz F, Bettermann D, Peng J L, Ertmer W 1996 Europhys. Lett. 34 651
[3]	Haubrich D, Schadwinkel H, Strauch F, Ueberholz B, Wynands R, Meschede D 1996 Europhys. Lett. 34 663
[4]	Willems P A, Boyd R A, Bliss J L, Libbrecht K G 1997 Phys. Rev. Lett. 78 1660
[5]	Hilland S B, McClelland J J 2003 Appl. Phys. Lett. 82 3128
[6]	Yoon S, Choi Y, Park S, Kim J, Lee J H, An K 2006 Appl. Phys. Lett. 88 211104
[7]	Wang J, He J, Qiu Y, Yang B D, Zhao J Y, Zhang T C, Wang J M 2008 Chin. Phys. B 17 2062
[8]	He J, Yang B D, Zhang T C, Wang J M 2011 J. Phys. D: Appl. Phys. 44 135102
[9]	He J, Yang B D, Zhang T C, Wang J M 2011 Chin. Phys. B 20 073701
[10]	He J 2011 Ph. D. Thesis (Shanxi: Shanxi University) (in Chinese) [何军 2011 博士学位论文(山西:山西大学)]
[11]	Thompson J D, Tiecke T G, Zibrov A S, Vuletic V, Lukin M D 2013 Phys. Rev. Lett. 110 133001
[12]	Haubrich D, Hope A, Meschede D 1993 Opt. Commun. 102 225
[13]	Foot C J 2005 Atomic Physics (Oxford: Clarendon Press) 180-181
[14]	Carmichael H J, Walls D F 1976 J. Phys. B: At. Mol. Phys. 9 1199

[1]	Cheng Yong-Jun, Dong Meng, Sun Wen-Jun, Wu Xiang-Min, Zhang Ya-Fei, Jia Wen-Jie, Feng Cun, Zhang Rui-Fang. Ultra-high vacuum measurement based on ⁷Li cold atoms manipulation. Acta Physica Sinica, 2024, 73(22): 220601. doi: 10.7498/aps.73.20241215
[2]	Yan Wei-Zhi, Fan Qing, Yang Peng-Fei, Li Gang, Zhang Peng-Fei, Zhang Tian-Cai. Trapping of single atom and precise control of its coupling strength in micro-optical cavity. Acta Physica Sinica, 2023, 72(11): 114202. doi: 10.7498/aps.72.20222220
[3]	Ren Rui-Min, Yin Ya-Ling, Wang Zhi-Zhang, Guo Chao-Xiu, Yin Jian-Ping. Theoretical research on the generation of a submicron localized hollow beam and its applications in the trapping and cooling of a single atom. Acta Physica Sinica, 2016, 65(11): 114101. doi: 10.7498/aps.65.114101
[4]	Xu Run-Dong, Liu Wen-Liang, Wu Ji-Zhou, Ma Jie, Xiao Lian-Tuan, Jia Suo-Tang. Ultracold collisions in a dual species 23Na-133Cs magneto-optical trap. Acta Physica Sinica, 2016, 65(9): 093201. doi: 10.7498/aps.65.093201
[5]	Liu Bei, Jin Gang, He Jun, Wang Jun-Min. 852-nm triggered single-photon source based on trapping and manipulation of a single cesium atom confined in a microscopic optical dipole trap. Acta Physica Sinica, 2016, 65(23): 233701. doi: 10.7498/aps.65.233701
[6]	Gou Wei, Liu Kang-Kang, Fu Xiao-Hu, Zhao Ru-Chen, Sun Jian-Fang, Xu Zhen. Optimization of the loading rate of magneto-optical trap for neutral mercury atom. Acta Physica Sinica, 2016, 65(13): 130201. doi: 10.7498/aps.65.130201
[7]	Wen Rui-Juan, Du Jin-Jin, Li Wen-Fang, Li Gang, Zhang Tian-Cai. Construction of a strongly coupled cavity quantum electrodynamics system with easy accessibility of single or multiple intra-cavity atoms. Acta Physica Sinica, 2014, 63(24): 244203. doi: 10.7498/aps.63.244203
[8]	Yang Wei, Sun Da-Li, Zhou Lin, Wang Jin, Zhan Ming-Sheng. Zeeman slowing and magneto-optically trapping of lithium atoms in atomic interferometry experiments. Acta Physica Sinica, 2014, 63(15): 153701. doi: 10.7498/aps.63.153701
[9]	Diao Wen-Ting, He Jun, Liu Bei, Wang Jie-Ying, Wang Jun-Min. Improving the single atom probability by using the blue-detuned laser-assisted-collisions between the cold atoms trapped in the for-off-resonance trap. Acta Physica Sinica, 2014, 63(2): 023701. doi: 10.7498/aps.63.023701
[10]	Yuan Jin-Peng, Ji Zhong-Hua, Yang Yan, Zhang Hong-Shan, Zhao Yan-Ting, Ma Jie, Wang Li-Rong, Xiao Lian-Tuan, Jia Suo-Tang. Experimental investigation on ionized ultracold molecules formed in a magneto-optical trap by time-of-flight mass spectroscopy. Acta Physica Sinica, 2012, 61(18): 183301. doi: 10.7498/aps.61.183301
[11]	Wang Cheng, Xu Peng, He Xiao-Dong, Wang Jin, Zhan Ming-Sheng. Transferring single-atoms between two red-detuned far-off-resonance optical dipole traps. Acta Physica Sinica, 2012, 61(20): 203701. doi: 10.7498/aps.61.203701
[12]	Zhang Peng-Fei, Li Gang, Zhang Yu-Chi, Yang Rong-Can, Guo Yan-Qiang, Wang Jun-Min, Zhang Tian-Cai. Investigation of dynamics of magneto-optical trap loading by light-induced atom desorption. Acta Physica Sinica, 2010, 59(9): 6423-6429. doi: 10.7498/aps.59.6423
[13]	Qiu Ying, He Jun, Wang Yan-Hua, Wang Jing, Zhang Tian-Cai, Wang Jun-Min. Loading and cooling of cesium atoms in 3D optical lattice. Acta Physica Sinica, 2008, 57(10): 6227-6232. doi: 10.7498/aps.57.6227
[14]	Wang Li-Rong, Ma Jie, Zhang Lin-Jie, Xiao Lian-Tuan, Jia Suo-Tang. Experimental study of ultracold cesium atom photoassociation spectrum using an amplitude modulation technique. Acta Physica Sinica, 2007, 56(11): 6373-6377. doi: 10.7498/aps.56.6373
[15]	Zhang Peng-Fei, Xu Xin-Ping, Zhang Hai-Chao, Zhou Shan-Yu, Wang Yu-Zhu. UV light-induced atom desorption for magnetic trap in single vacuum chamber. Acta Physica Sinica, 2007, 56(6): 3205-3211. doi: 10.7498/aps.56.3205
[16]	Wang Yan-Hua, Yang Hai-Jing, Zhang Tian-Cai, Wang Jun-Min. Measurement of the number of cold atoms trapped in cesium magneto-optical trap via probe absorption. Acta Physica Sinica, 2006, 55(7): 3403-3407. doi: 10.7498/aps.55.3403
[17]	Jiang Kai-Jun, Li Ke, Wang Jin, Zhan Ming-Sheng. Dependence of number of trapped atoms on the experimental parameters of Rb magneto-optical trap. Acta Physica Sinica, 2006, 55(1): 125-129. doi: 10.7498/aps.55.125
[18]	Geng Tao, Yan Shu-Bin, Wang Yan-Hua, Yang Hai-Jing, Zhang Tian-Cai, Wang Jun-Min. Temperature measurement of cold atoms in a cesium magneto-optical trap by means of short-distance time-of-flight absorption spectrum. Acta Physica Sinica, 2005, 54(11): 5104-5108. doi: 10.7498/aps.54.5104
[19]	Wang Xiao-Bo, Huang Tao, Shao Jun-Hu, Jiang Yu-Qiang, Xiao Lian-Tuan, Jia Suo-Tang. Determination of signal-to-background ratio of single molecular photon source based on photon counting statistics. Acta Physica Sinica, 2005, 54(2): 617-621. doi: 10.7498/aps.54.617
[20]	Liu Tao, Zhang Tian-Cai, Wang Jun-Min, Peng Kun-Chi. Optical dipole trap in a high-finesse micro-cavity. Acta Physica Sinica, 2004, 53(5): 1346-1351. doi: 10.7498/aps.53.1346

Catalog

Vol. 63, Issue 5 - 2014-03-05

Metrics

Abstract views: 6914
PDF Downloads: 410
Cited By: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

Search

Article

留言板