Two-photon Rabi oscillations in a single InxGa1-xAs/GaAs quantum dot
Two-photon Rabi oscillations in a single InxGa1-xAs/GaAs quantum dot
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DOI：
10.1103/physrevb.73.125304
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发表时间：
2006-03-01
影响因子：
3.7
通讯作者：
Zrenner, A
中科院分区：
文献类型：
--
作者：
Stufler, S;Machnikowski, P;Zrenner, A
本文报道了通过相干双光子过程引起的单个InxGa_（1-x）As/GaAs量子点中双激子的拉比振荡。与单激子拉比振荡相反，在激发脉冲区域，测量的布居振荡不是纯正弦的。实验结果很好地再现的理论计算，只依赖于脉冲形状和双激子结合能。双激子的退相时间与单激子的退相时间相似，在所施加的测量条件下达到220 ps。
We report on Rabi oscillations of the biexciton in a single InxGa1-xAs/GaAs quantum dot, induced via a coherent two-photon process. In contrast to single-exciton Rabi oscillations the measured population oscillation is not purely sinusoidal in excitation pulse area. The experimental results are well reproduced by a theoretical calculation that relies only on the pulse shape and biexciton binding energy. Dephasing times of the biexciton are similar to those of the single exciton under the applied measurement conditions reaching up to 220 ps.