Vacuum Rabi Oscillation of an Atom without Rotating-Wave Approximation |
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Authors: | WANG Fa-Qiang LIU Wei-Ci LIANG Rui-Sheng |
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Affiliation: | Lab of Photonic Information Technology, School of Information and Photoelectronic Science and Engineering, South China Normal University, Guangzhou 510006 |
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Abstract: | We have investigated vacuum Rabi oscillation of an atom coupled with single-mode cavity field exactly, and compared the results with that of the Jaynes--Cummings (J-C) model. The results show that for resonant case, there is no Rabi oscillation for an atom. For small detuning and weak coupling case, the probability for the atom in excited state oscillates against time with different frequencies and amplitudes from that of the J-C model. It exhibits that the counter-rotating wave interaction could significantly effect the dynamic behaviour of the atom, even under the condition in which the RWA is considered to be justified. |
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Keywords: | 42.50.Md 31.70.Hq 42.50.Lc |
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