Stimulated emission from the biexciton in a single self-assembled II-VI quantum dot - art. no. 067401

被引:44
作者
Akimov, IA [1 ]
Andrews, JT [1 ]
Henneberger, F [1 ]
机构
[1] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany
关键词
D O I
10.1103/PhysRevLett.96.067401
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Using two-photon excitation, stimulated emission from the biexciton state in a single CdSe/ZnSe quantum dot is observed in a two-pulse configuration. We directly time resolve the emission-absorption characteristics and verify the potential for laser action. By setting the polarization of the stimulation pulse, the recombination path of the biexciton and, by this, the state of the photons emitted in the decay cascade is controlled. We elaborate also the coherent response and address entanglement and disentanglement of the exciton-biexciton system.
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页数:4
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