1.5µm量子点单光子源中多光子发射的抑制

2013 International Conference on Indium Phosphide and Related Materials (IPRM) Pub Date : 2013-05-19 DOI:10.1109/ICIPRM.2013.6562564

T. Miyazawa, K. Takemoto, Y. Sakuma, Hai-Xi Song, M. Takatsu, Tsuyoshi Yamamoto, Y. Arakawa

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引用次数: 0

摘要

利用超导单光子探测器(SSPD)高精度地获得了单个“双封盖”InAs/InP量子点(QD)的光子相关函数g(2)(τ)。通过对单个InAs/InP量子点的e1h0态进行共振激发，使g(2)(0)降低到检测极限。在进入e1h0态的共振激励下，还观察到e0h0态的PL强度的拉比振荡。这些结果表明，产生e1h0态的相干激子对提高单光子发射的纯度是有效的。

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Suppression of multi-photon emission in 1.5-µm quantum-dot single-photon source

Photon-correlation function g⁽²⁾(τ) of a single `doublecapped' InAs/InP quantum dot (QD) was obtained with high accuracy using a superconducting single-photon detector (SSPD). By using resonant excitation to the e₁h₀ state in the single InAs/InP QD, g⁽²⁾(0) was decreased to the detection limit. Rabi oscillation of the PL intensity of e₀h₀ state is also observed under the resonant excitation into the e₁h₀ state. These results suggest that the coherent exciton generation into e₁h₀ state is effective to improve the purity of the single-photon emission.

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2013 International Conference on Indium Phosphide and Related Materials (IPRM)

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