| Original Articles |
|
|
|
|
Monte Carlo Simulation of Cooling Induced by Parametric Resonance |
| ZHANG Peng-Fei;ZHANG Hai-Chao;XU Xin-Ping;WANG Yu-Zhu |
| Key Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800Center for Cold Atom Physics, Chinese Academy of Sciences, Shanghai 201800 |
|
| Cite this article: |
|
ZHANG Peng-Fei, ZHANG Hai-Chao, XU Xin-Ping et al 2008 Chin. Phys. Lett. 25 89-92 |
|
|
|
Abstract We demonstrate that the parametric resonance in a magnetic quadrupole
trap can be exploited to cool atoms by using Bird's method. In our programme the parametric resonance was realized by anisotropically modulating the trap potential. The modulation frequency dependences of temperature and fraction of the trapped atoms are explored. Furthermore, the temperature after the modulation as functions of the modulation amplitude and the mean elastic collision time are also studied. These results are valuable for the experiment of parametric resonance in a quadrupole trap.
|
| Keywords:
32.80.Pj
39.25.+k
|
|
|
Received: 04 September 2007
Published: 27 December 2007
|
|
|
|
|
|
|
|
[1] Savard T A, O'Hara K M and Thomas J E 1997 Phys. Rev. A 56 R1095
[2] Gardiner C W, Ye J, Nagerl H C and Kimble H J 2000 Phys.Rev. A 61 045801
[3] Poli N, Brecha R J, Roati G and Modugno G 2002 Phys.Rev. A 65 021401
[4] Kumakura M, Shirahata Y, Takasu Y, Takahashi Y and Yabuzaki T2003 Phys. Rev. A 68 021401
[5] Migdal A L, Prodan J V, Phillips W D, Bergeman T H and MetcalfH J 1985 Phys. Rev. Lett. 54 2596
[6] Wang Y Z, Zhou S Y, Long Q, Zhou S Y and Fu H X 2003 Chin. Phys. Lett. 20 799
[7] Bergeman T H, Patrick McNicholl, Jan Kycia, Harold Metcalf andBalazs N L 1989 J. Opt. Soc. Am. B 6 2249
[8] Zhang P F, Zhang H C, Xu X P and Wang Y Z 2008 Chin. Opt.Lett. 6(2) (to be published)
[9] Bird G A 1994 Molecular Gas Dynamics and the DirectSimulation of Gas Flow (Oxford: Clarendon)
[10] Zhang P F, Xu X P, Zhang H C and Wang Y Z 2007 Acta Opt.Sin. 27 1929
[11] Ketterle W and van Druten N J 1996 Adv. At. Molecular Opt. Phys. 37 181
[12] Gehm M E, O'Hara K M, Savard T A and Thomas J E 1998 Phys. Rev. A 58 3914 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
