A Waveguide-Coupled On-Chip Single-Photon Source
A Waveguide-Coupled On-Chip Single-Photon Source
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DOI：
10.1103/physrevx.2.011014
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发表时间：
2012-03-29
影响因子：
12.5
通讯作者：
Finley, J. J.
中科院分区：
文献类型：
--
作者：
Laucht, A.;Puetz, S.;Finley, J. J.
我们研究了单个自组装InGaAs量子点耦合到GaAs光子晶体波导的导光模的单光子产生。通过对波导内的单个点进行共焦显微镜测量，我们确定了它们的位置，精度优于0.5 μ m。时间分辨的光致发光和光子自相关测量被用来证明单光子特性的发射到传播的波导模式。所获得的结果表明，这种纳米结构可用于实现具有超过β（T）的单模自发发射耦合效率（类似于85%）和达到> 1GHz的最大发射速率的潜力的片上高度定向的单光子源。
We investigate single-photon generation from individual self-assembled InGaAs quantum dots coupled to the guided optical mode of a GaAs photonic crystal waveguide. By performing confocal microscopy measurements on single dots positioned within the waveguide, we locate their positions with a precision better than 0.5 mu m. Time-resolved photoluminescence and photon autocorrelation measurements are used to prove the single-photon character of the emission into the propagating waveguide mode. The results obtained demonstrate that such nanostructures can be used to realize an on-chip, highly directed single-photon source with single-mode spontaneous emission coupling efficiencies in excess of beta(T) similar to 85% and the potential to reach maximum emission rates >1 GHz.