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物理学报. 2006, 55(4): 1781-1786.
doi: 10.7498/aps.55.1781.
脉冲激发三能级体系半导体量子点的单光子发射效率
- 收稿日期: 2005-08-26
- 修回日期: 2005-11-29
- 刊出日期: 2006-02-05
English Abstract
Efficiency of single photon emission in three-level system of semiconductor quantum dots with pulsed excitation
- Received Date:
26 August 2005
- Accepted Date:
29 November 2005
- Published Online:
05 February 2006
Abstract: The statistic characteristics of single photon emission in single semiconductor quantum dot with pulse excitation have been investigated.With rotating-wave approximation,we deduce the dynamics equations including second-order correlation function from the master equations of the populations and discuss the correlation function of photon emission from the exciton combination under different input pulse areas.There will appear an apparant split peak around zero time delay under strong excitation.For short pulse width,the probability of single photon emission p and the efficiency of single photon emission η oscillate as the excitation intensity increases.It is revealed that high efficient single photon emissions can be realized in this system when excited with input pulse area about π and short pulse width.
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