Stabilizing photoassociated Cs2 molecules by optimal control

doi:10.1088/1674-1056/22/1/013301

Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (1): 13301-013301.doi: 10.1088/1674-1056/22/1/013301

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Stabilizing photoassociated Cs₂ molecules by optimal control

张为, 谢廷, 黄寅, 王高仁, 丛书林

School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China

收稿日期:2012-04-13 修回日期:2012-06-23 出版日期:2012-12-01 发布日期:2012-12-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 10974024) and the SRFDP, China (Grant No. 20090041110025).

Stabilizing photoassociated Cs₂ molecules by optimal control

Zhang Wei (张为), Xie Ting (谢廷), Huang Yin (黄寅), Wang Gao-Ren (王高仁), Cong Shu-Lin (丛书林)

School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China

Received:2012-04-13 Revised:2012-06-23 Online:2012-12-01 Published:2012-12-01
Contact: Cong Shu-Lin E-mail:shlcong@dlut.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 10974024) and the SRFDP, China (Grant No. 20090041110025).

摘要/Abstract

摘要： We demonstrate theoretically that photoassociated molecules can be stabilized to deeply bound states. This process is achieved by transferring the population from the outer well to the inner well using optimal control theory, the Cs₂ molecule is taken as an example. Numerical calculations show that weakly bound molecules formed in the outer well by a pump pulse can be compressed to the inner well via a vibrational level of the ground electronic state as an intermediary by an additionally optimized laser pulse. The positively chirped pulse can enhance the population of the target state. With a transform-limited dump pulse, nearly all photoassociated molecules in the inner well of the excited electronic state can be transferred to the deeply vibrational level of the ground electronic state.

关键词: ultracold molecule, photoassociation, optimal control

Abstract: We demonstrate theoretically that photoassociated molecules can be stabilized to deeply bound states. This process is achieved by transferring the population from the outer well to the inner well using optimal control theory, the Cs₂ molecule is taken as an example. Numerical calculations show that weakly bound molecules formed in the outer well by a pump pulse can be compressed to the inner well via a vibrational level of the ground electronic state as an intermediary by an additionally optimized laser pulse. The positively chirped pulse can enhance the population of the target state. With a transform-limited dump pulse, nearly all photoassociated molecules in the inner well of the excited electronic state can be transferred to the deeply vibrational level of the ground electronic state.

Key words: ultracold molecule, photoassociation, optimal control

中图分类号: (Photon interactions with molecules)

33.80.-b

32.80.Qk (Coherent control of atomic interactions with photons)

张为, 谢廷, 黄寅, 王高仁, 丛书林. Stabilizing photoassociated Cs₂ molecules by optimal control[J]. Chin. Phys. B, 2013, 22(1): 13301-013301.

Zhang Wei (张为), Xie Ting (谢廷), Huang Yin (黄寅), Wang Gao-Ren (王高仁), Cong Shu-Lin (丛书林). Stabilizing photoassociated Cs₂ molecules by optimal control[J]. Chin. Phys. B, 2013, 22(1): 13301-013301.

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Stabilizing photoassociated Cs₂ molecules by optimal control

Stabilizing photoassociated Cs₂ molecules by optimal control

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