Surface acoustic wave regulated single photon emission from a coupled quantum dot-nanocavity system
Surface acoustic wave regulated single photon emission from a coupled quantum dot-nanocavity system
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DOI：
10.1063/1.4959079
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发表时间：
2016-05
期刊：
影响因子：
--
通讯作者：
M. Weiß;S. Kapfinger;T. Reichert;J. Finley;A. Wixforth;M. Kaniber;H. Krenner
中科院分区：
文献类型：
--
作者：
M. Weiß;S. Kapfinger;T. Reichert;J. Finley;A. Wixforth;M. Kaniber;H. Krenner
腔量子电动力学弱耦合状态下的耦合量子点-纳米腔系统通过 $f_{\rm SAW}\simeq800\,\mathrm{MHz}$ 表面声波的相干弹性场动态地进入和退出共振。当声波使系统产生共振时，珀塞尔效应会强烈增加光与物质的相互作用。这导致了精确定时的单光子发射，如二阶光子相关函数 $g^{(2)}$ 所证实。我们实验的所有相关频率都在 $g^{(2)}$ 的傅里叶变换中被忠实地识别，证明了系统发射的单光子流的高保真度调节。
A coupled quantum dot--nanocavity system in the weak coupling regime of cavity quantumelectrodynamics is dynamically tuned in and out of resonance by the coherent elastic field of a $f_{\rm SAW}\simeq800\,\mathrm{MHz}$ surface acoustic wave. When the system is brought to resonance by the sound wave, light-matter interaction is strongly increased by the Purcell effect. This leads to a precisely timed single photon emission as confirmed by the second order photon correlation function $g^{(2)}$. All relevant frequencies of our experiment are faithfully identified in the Fourier transform of $g^{(2)}$, demonstrating high fidelity regulation of the stream of single photons emitted by the system.