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arXiv 1107.4085cond-mat.mes-hall
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InAs/GaAs润湿层中天然量子点的单光子发射

Single-photon emission from the natural quantum dots in the InAs/GaAs wetting layer

T. Kazimierczuk, A. Golnik, P. Kossacki, J. Gaj, Z. Wasilewski, A. Babinski

摘要:

对InAs/GaAs浸润层中形成的量子点进行了时间分辨的显微光致发光研究。这些点是由于在润湿层中的In组成的波动。它们显示出具有低空间密度的光谱尖锐的发光线。我们确定中性激子和双激子以及trions相关的线。激子发射反聚束(二阶相关值g^2(0)=0.16)和双激子-激子发射级联证明了量子点的非经典发射,并证实了它们作为单光子源的潜力。

英文摘要:

Time-resolved microphotoluminescence study is presented for quantum dots which are formed in the InAs/GaAs wetting layer. These dots are due to fluctuations of In composition in the wetting layer. They show spectrally sharp luminescence lines with a low spatial density. We identify lines related to neutral exciton and biexciton as well as trions. Exciton emission antibunching (second order correlation value of g^2(0)=0.16) and biexciton-exciton emission cascade prove non-classical emission from the dots and confirm their potential as single photon sources.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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