Strain spectrally-tunable single-photon source based on a quantum dot in microcavity (Conference Presentation)
Strain spectrally-tunable single-photon source based on a quantum dot in microcavity (Conference Presentation)
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基于微腔量子点的应变光谱可调单光子源（会议演示）
DOI：
10.1117/12.2544193
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Moczala-Dusanowska
中科院分区：
文献类型：
--
作者：
Moczala-Dusanowska
外延生长的自组装量子点(QD)是有效的单光子产生的候选材料。为了最大化从器件中提取的光子数量，量子点经常被嵌入到诸如微腔等光子结构中。一旦量子点被定位在光学腔内，珀塞尔效应确保光主要发射到腔模式中。在这一贡献中，我们展示了插入微腔中的量子点的发射调谐结果。在基于布拉格反射镜的平面腔中嵌入InAs/GaAs量子点的样品已经被集成到PMN-PT压电晶体上。随后，采用电子束光刻和反应离子刻蚀的方法制作了微腔。在外加应力的作用下，量子点发射的线性位移可以被调谐到基腔模式的共振中，从而使得由于珀塞尔效应而导致的量子点发射增强。
Epitaxially grown self-assembled quantum dots (QDs) are promising candidates for an efficient single-photon generation. In order to maximize the number of photons extracted from the device, QDs are frequently embedded into photonic structures such as micro-cavities. Once the QD is positioned inside an optical cavity, the Purcell effect ensures that light is emitted predominantly into the cavity mode. In this contribution, we demonstrate results of emission tuning of QDs inserted in micro-cavities. A sample containing an InAs/GaAs QDs embedded in a planar cavity based on Bragg reflectors has been integrated onto the PMN-PT piezo crystal. Subsequently, micro-cavities have been fabricated by electron-beam lithography and reactive ion etching. The application of external stress produces linear shifts of QDs emission which could be tuned into the resonance with fundamental cavity mode and allow enhancement of QD emission due to the Purcell effect.