In our experiment, a single cesium atom prepared in a large-magnetic-gradient magneto–optical trap (MOT) can be efficiently transferred into a 1064-nm far-off-resonance microscopic optical dipole trap (FORT). The efficient transfer of the single atom between the two traps is used to determine the trapping lifetime and the effective temperature of the single atom in FORT. The typical trapping lifetime has been improved from ～ 6.9 s to ～ 130 s by decreasing the background pressure from ～ 1 × 10–10 Torr to ～ 2 × 10–11Torr and applying one-shot 10-ms laser cooling phase. We also theoretically investigate the dependence of trapping lifetimes of a single atom in a FORT on trap parameters based on the FORT beam’s intensity noise induced heating. Numerical simulations show that the heating depends on the FORT beam’s waist size and the trap depth. The trapping time can be predicted based on effective temperature measurement of a single atom in the FORT and the intensity noise spectra of the FORT beam. These experimental results are found to be in agreement with the predictions of the heating model.
Corresponding Author(s):
WANG Jun-min,Email:wwjjmm@sxu.edu.cn
引用本文:
. Extending the trapping lifetime of single atom in a microscopic far-off-resonance optical dipole trap[J]. Frontiers of Physics, 2011, 6(3): 262-270.
Jun HE, Bao-dong YANG, Yong-jie CHENG, Tian-cai ZHANG, Jun-min WANG. Extending the trapping lifetime of single atom in a microscopic far-off-resonance optical dipole trap. Front. Phys. , 2011, 6(3): 262-270.
S. Chu, J. E. Bjorkholm, A. Ashkin, and A. Cable, Phys. Rev. Lett. , 1986, 57: 314 doi: 10.1103/PhysRevLett.57.314
2
J. D. Miller, R. A. Cline, and D. J. Heinzen, Phys. Rev. A , 1993, 47: R4567 doi: 10.1103/PhysRevA.47.R4567
3
R. Grimm, M. Weidemuller, and Y. Ovchinnikov, Adv. At. Mol. Opt. Phys. , 2000, 42: 95 doi: 10.1016/S1049-250X(08)60186-X
4
D. Schrader, I. Dotsenko, M. Khudaverdyan, Y. Miroshnychenko, A. Rauschenbeutel, and D. Meschede, Phys. Rev. Lett. , 2004, 93: 150501 doi: 10.1103/PhysRevLett.93.150501
5
B. Darquie, M. P. A. Jones, J. Dingjan, J. Beugnon, S. Bergamini, Y. Sortais, G. Messin, A. Browaeys, and P. Grangier, Science , 2005, 309: 454 doi: 10.1126/science.1113394
6
J. Volz, M. Weber, D. Schlenk, W. Rosenfeld, J. Vrana, K. Saucke, C. Kurtsiefer, and H. Weinfurter, Phys. Rev. Lett. , 2006, 96: 030404 doi: 10.1103/PhysRevLett.96.030404
7
S. J. M. Kuppens, K. L. Corwin, K. W. Miller, T. E. Chupp, and C. E. Wieman, Phys. Rev. A , 2000, 62: 013406 doi: 10.1103/PhysRevA.62.013406
8
P. Phoonthong, P. Douglas, A. Wickenbrock, and F. Renzoni, Phys. Rev. A , 2010, 82: 013406 doi: 10.1103/PhysRevA.82.013406
9
T. A. Savard, K. M. O’Hara, and J. E. Thomas, Phys. Rev. A , 1997, 56: R1095 doi: 10.1103/PhysRevA.56.R1095
10
K. M. O’Hara, S. R. Granade, M. E. Gehm, T. A. Savard, S. Bali, C. Freed, and J. E. Thomas, Phys. Rev. Lett. , 1999, 82: 4204 doi: 10.1103/PhysRevLett.82.4204
11
C. Tuchendler, A. M. Lance, A. Browaeys, Y. R. P. Sortais, and P. Grangier, Phys. Rev. A , 2008, 78: 033425 doi: 10.1103/PhysRevA.78.033425
12
M. J. Gibbons, S. Y. Kim, K. M. Fortier, P. Ahmadi, and M. S. Chapman, Phys. Rev. A , 2008, 78: 043418 doi: 10.1103/PhysRevA.78.043418
13
S. Kuhr, W. Alt, D. Schrader, I. Dotsenko, Y. Miroshnychenko, A. Rauschenbeutel, and D. Meschede, Phys. Rev. A , 2005, 72: 023406 doi: 10.1103/PhysRevA.72.023406
14
D. D. Yavuz, P. B. Kulatunga, E. Urban, T. A. Johnson, N. Proite, T. Henage, T. G. Walker, and M. Saffman, Phys. Rev. Lett. , 2006, 96: 063001 doi: 10.1103/PhysRevLett.96.063001
15
M. P. A. Jones, J. Beugnon, A. Gaetan, J. Zhang, G. Messin, A. Browaeys, and P. Grangier, Phys. Rev. A , 2007, 75: 040301 doi: 10.1103/PhysRevA.75.040301
16
E. Urban, T. A. Johnson, T. Henage, L. Isenhower, D. D. Yavuz, T. G. Walker, M. Saffman, Nat. Phys. , 2009, 5: 110 doi: 10.1038/nphys1178
17
A. Gaetan, Y. Miroshnychenko, T. Wilk, A. Chotia, M. Viteau, D. Comparat, P. Pillet, A. Browaeys, and P. Grangier, Nat. Phys. , 2009, 5: 115 doi: 10.1038/nphys1183
18
Z. C. Zuo, M. Fukusen, Y. Tamaki, T. Watanabe, Y. Nakagawa, and K. Nakagawa, Opt. Express , 2009, 17: 22898 doi: 10.1364/OE.17.022898
19
M. Weber, J. Volz, and K. Saucke, C. Kurtsiefer, and H. Weinfurter, Phys. Rev. A , 2006, 73: 043406 doi: 10.1103/PhysRevA.73.043406
Y. Choi, S. Yoon, S. Kang, W. Kim, J. H. Lee, and K. An, Phys. Rev. A , 2007, 76: 013402 doi: 10.1103/PhysRevA.76.013402
32
J. He, B. D. Yang, T. C. Zhang, and J. M. Wang, J. Phys. D: Appl. Phys. , 2011, 44: 135102 doi: 10.1088/0022-3727/44/13/135102
33
H. J. Metcalf and P. van der Straten, Laser cooling and trapping, New York: Springer-Verlag, 1999 doi: 10.1007/978-1-4612-1470-0
34
W. Alt, D. Schrader, S. Kuhr, M. Muller, V. Gomer, and D. Meschede, Phys. Rev. A , 2003, 67: 033403 doi: 10.1103/PhysRevA.67.033403
35
A. Fuhrmanek, A. M. Lance, C. Tuchendler, P. Grangier, Y. R. P. Sortais, and A. Browaeys, New J. Phys. , 2010, 12: 053028 doi: 10.1088/1367-2630/12/5/053028
36
S. Chu, L. Hollberg, J. E. Bjorkholm, A. Cable, and A. Ashkin, Phys. Rev. Lett. , 1985, 55: 48 doi: 10.1103/PhysRevLett.55.48
37
A. M. Steane, M. Chowdhury, and C. J. Foot, J. Opt. Soc. Am. B , 1992, 9: 2142 doi: 10.1364/JOSAB.9.002142
