| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Spontaneous emission from a microwave-driven four-level atom in an anisotropic photonic crystal |
| Jiang Li(姜丽)1, Ren-Gang Wan(万仁刚)2, Zhi-Hai Yao(姚治海)1 |
1 Changchun University of Science and Technology, Changchun 130000, China;
2 School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China |
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Abstract The spontaneous emission from a microwave-driven four-level atom embedded in an anisotropic photonic crystal is studied. Due to the modified density of state (DOS) in the anisotropic photonic band gap (PBG) and the coherent control induced by the coupling fields, spontaneous emission can be significantly enhanced when the position of the spontaneous emission peak gets close to the band gap edge. As a result of the closed-loop interaction between the fields and the atom, the spontaneous emission depends on the dynamically induced Autler-Townes splitting and its position relative to the PBG. Interesting phenomena, such as spectral-line suppression, enhancement and narrowing, and fluorescence quenching, appear in the spontaneous emission spectra, which are modulated by amplitudes and phases of the coherently driven fields and the effect of PBG. This theoretical study can provide us with more efficient methods to manipulate the atomic spontaneous emission.
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Received: 04 March 2016
Revised: 28 April 2016
Accepted manuscript online:
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PACS:
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42.70.Qs
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(Photonic bandgap materials)
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32.80.Qk
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(Coherent control of atomic interactions with photons)
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42.50.Gy
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(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11447232, 11204367, 11447157, and 11305020). |
Corresponding Authors:
Jiang Li, Ren-Gang Wan
E-mail: jiangli08@mails.jlu.edu.cn;wrg@snnu.edu.cn
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Cite this article:
Jiang Li(姜丽), Ren-Gang Wan(万仁刚), Zhi-Hai Yao(姚治海) Spontaneous emission from a microwave-driven four-level atom in an anisotropic photonic crystal 2016 Chin. Phys. B 25 104204
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