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Phys. Rev. A 67, 033816 (2003) [7 pages]

Absorption mechanism in a four-level system

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Wei-Hua Xu1,2 and Jin-Yue Gao1,2,3,*
1College of Physics, Jilin University, Changchun 130023, People’s Republic of China
2Key Laboratory of Coherent Light, Atomic and Molecular Spectroscopy, Educational Ministry of China, Changchun, People’s Republic of China
3CCAST (World Laboratory), P.O. Box 8370, Beijing 100080, People’s Republic of China

Received 27 September 2002; published 28 March 2003

We investigate the absorption mechanism in a four-level system proposed by Harris and Yamamoto [Phys. Rev. Lett. 81, 3611 (1998)] by using the quantum-jump approach. We show that the one-photon and three-photon absorption processes are both responsible for the whole absorption at the line center of the probe field. In particular, we show the important role of the one-photon absorption process.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.67.033816
DOI:
10.1103/PhysRevA.67.033816
PACS:
42.50.Gy

*Author to whom correspondence should be addressed.

 
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