ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Absorption and dispersion control in a five-level M-type atomic system |
Yang Hong (杨红), Yan Dong (严冬), Zhang Mei (张梅), Fang Bo (房博), Zhang Yan (张岩), Wu Jin-Hui (吴金辉 ) |
College of Physics, Jilin University, Changchun 130012, China |
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Abstract We investigate the steady optical response of a coherently driven five-level M-type atomic system in three different situations. When all three coupling fields have the same zero detuning, we just find one deep transparency window accompanied by a steep normal dispersion in the probe absorption and dispersion spectra. When two coupling fields are detuned from the relevant transitions to the same extent, however, a second deep transparency window may be observed in the presence of a narrow absorption line of linewidth ~ 50 kHz. In this case, two single-photon far-detuned transitions can be replaced by a two-photon resonant transition, so the five-level M system in fact reduces into a four-level quasi-Λ system. Finally, we note that no deep transparency windows and no narrow absorption lines can be found when all three coupling fields have unequal detunings.
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Received: 30 March 2012
Revised: 05 May 2012
Accepted manuscript online:
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PACS:
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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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42.50.Ex
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(Optical implementations of quantum information processing and transfer)
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32.80.Qk
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(Coherent control of atomic interactions with photons)
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11174110), the National Basic Research Program of China (Grant No. 2011CB921603), and the Basic Scientific Research Foundation of Jilin University, China. |
Corresponding Authors:
Wu Jin-Hui
E-mail: jhwu@jlu.edu.cn
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Cite this article:
Yang Hong (杨红), Yan Dong (严冬), Zhang Mei (张梅), Fang Bo (房博), Zhang Yan (张岩), Wu Jin-Hui (吴金辉 ) Absorption and dispersion control in a five-level M-type atomic system 2012 Chin. Phys. B 21 114207
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