期刊
PHYSICAL REVIEW A
卷 79, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.79.023815
关键词
hyperfine structure; optical modulation; phase modulation; quantum optics; rubidium; self-induced transparency
资金
- Engineering and Physical Sciences Research Council
- Scottish University Physics Alliance (SUPA)
- EU [FP7-212008]
This paper presents a theoretical study of the time-dependent cross-phase-modulation in Rb-87. A four-level system in the N configuration is constructed by making use of the hyperfine sublevels present in the rubidium D lines. It is shown that a large transient absorption is present on the electromagnetically induced transparency transition when that field is suddenly turned on. Furthermore, the magnitude and rise time of the cross-phase-modulation are shown to be inversely proportional to each other. We also construct the first-order nonadiabatic corrections to the atomic evolution and demonstrate how these affect slow-light pulse propagation in the atomic ensemble.
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