| ATOMIC AND MOLECULAR PHYSICS |
|
|
|
|
Coherent Control of Population Transfer in Li Atoms via Chirped Microwave Pulses |
| JIA Guang-Rui, ZHANG Ji-Cai, ZHANG Xian-Zhou, REN Zhen-Zhong |
| Department of Physics, Henan Normal University, Xinxiang 453007 |
|
| Cite this article: |
|
JIA Guang-Rui, ZHANG Ji-Cai, ZHANG Xian-Zhou et al 2009 Chin. Phys. Lett. 26 103201 |
|
|
|
|
Abstract We demonstrate theoretically that Li atoms can be transferred to states of a lower principal quantum number by exposing them to a frequency chirped microwave pulse. The population transfer of Li atoms from the n=75 state to n=70 with more than 90% efficiency is achieved by means of the sequential single-photon ∆ n=-1 transitions. The calculation fully utilizes all of the available orbital angular momentum l states for a given n, and the interference pattern and population evolution dynamics of individual l states are analyzed in detail. Using the time-dependent multilevel approach, we describe the process reasonably well as a sequence of adiabatic rapid passages.
|
| Keywords:
32.80.Qk
32.30.Bv
32.80.-t
|
|
|
Received: 08 May 2009
Published: 27 September 2009
|
|
| PACS: |
32.80.Qk
|
(Coherent control of atomic interactions with photons)
|
| |
32.30.Bv
|
(Radio-frequency, microwave, and infrared spectra)
|
| |
32.80.-t
|
(Photoionization and excitation)
|
|
|
|
|
|
[1] Mass D J et al 1998 Chem. Phys. Lett. 290 75
[2] Maeda H et al 2005 Science 307 1757
[3] Villeneuve D M et al 2000 Phys. Rev. Lett. 85542
[4] Gabrielse G et al 1999 Phys. Lett. B 455 311
[5]G1ushko B et al 1992 Phys. Rev. A 46 2823
[6] Fleischhauer M and Manka A S 1996 Phys. Rev. A 54 794
[7] Shore B W et al 1997 Phys. Rev. A 44 7442
[8] Bergmann K et al 1998 Rev. Mod.Phys. 70 1003
[9] Cai J et al 2008 Chin. Phys. Lett. 25 2041
[10] Zhang S A t al 2009 Chin. Phys. Lett. 26033201
[11] Lambert J et al 2002 Phys. Rev. A 66 053413
[12] Maeda H et al 2006 Phys. Rev. Lett. 96 073002
[13] Zhang X Z et al 2003 Phys. Rev. A 68 025401
[14] Zhang X Z et al 2005 Chin. Phys. 14 720
[15] Schweizer W, Fa$\beta$binder P, Gonzalez-Ferez R 1999 Atomic Data and Nuclear Data Tables 72 33 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
