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Transport characteristics of Rabi oscillations in the two-band superlattices
Authors:Duan Su-Qing  Wu Bin-Yi  Wang Zhi-Gang and Zhao Xian-Geng
Institution:Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
Abstract:We investigated the transport characteristics of Rabi oscillations, by using numerical methods, within a two-band tight-binding model driven by dc-ac electric fields. We found that Rabi oscillations make the long-time average current a sharply change, i.e. the current have resonant peaks appearing. Rabi oscillations are destroyed by dephasing; these peaks are the signatures of Rabi oscillations on the current response. The strong interband coupling will change the conditions of Rabi oscillations and, correspondingly, changes the places where the current resonant peaks appear.
Keywords:Rabi oscillations  interband coupling  current resonant peaks  quasi-energy spectrum
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