Photon antibunching from a single quantum-dot-microcavity system in the strong coupling regime
Photon antibunching from a single quantum-dot-microcavity system in the strong coupling regime
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DOI：
10.1103/physrevlett.98.117402
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发表时间：
2007-03-16
影响因子：
8.6
通讯作者：
Yamamoto, Yoshihisa
中科院分区：
文献类型：
--
作者：
Press, David;Goetzinger, Stephan;Yamamoto, Yoshihisa
我们观察到强耦合的单量子点与柱状微腔共振时光子的反聚束现象。当量子点从腔模光谱失谐时，腔发射保持反聚束，并且还与量子点发射相干。通过激发态对所选量子点进行共振泵浦，通过消除通常耦合到腔体的背景发射体来实现这些观察。该器件演示了一个按需单光子源在强耦合制度下工作，珀塞尔因子为61 +/- 7，量子效率为97%。
We observe antibunching in the photons emitted from a strongly coupled single quantum dot and pillar microcavity in resonance. When the quantum dot was spectrally detuned from the cavity mode, the cavity emission remained antibunched, and also anticorrelated from the quantum dot emission. Resonant pumping of the selected quantum dot via an excited state enabled these observations by eliminating the background emitters that are usually coupled to the cavity. This device demonstrates an on-demand single-photon source operating in the strong coupling regime, with a Purcell factor of 61 +/- 7 and quantum efficiency of 97%.