An electrically driven cavity-enhanced source of indistinguishable photons with 61% overall efficiency
An electrically driven cavity-enhanced source of indistinguishable photons with 61% overall efficiency
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DOI：
10.1063/1.4939831
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发表时间：
2016-04-01
期刊：
影响因子：
5.6
通讯作者：
Reitzenstein, S.
中科院分区：
文献类型：
--
作者：
Schlehahn, A.;Thoma, A.;Reitzenstein, S.
我们报告了一种以高达1.2 GHz的脉冲重复率工作的不可区分光子的电驱动高效源。该量子光源基于集成自组织量子点的p-i-n掺杂微柱腔，利用弱耦合状态下的腔量子电动力学效应来增强单量子发射器耦合到腔模式的发射。对于f = 625 MHz电触发的器件，我们实现了（61 +/- 11）%的整体单光子提取效率。分析了激发重复率对多光子发射事件的抑制作用，我们观察到，在373 MHz至1.2 GHz的f范围内，单光子发射与g(HBT)((2))(0)值在0.076 ~ 0.227之间相关。在487 MHz脉冲电流注入下的hong - ou - mandel型双光子干涉实验表明，在单光子发射速率为（92 +/- 23）MHz时，光子不区分率为（41.1 +/- 9.5）%。(C) 2016。
We report on an electrically driven efficient source of indistinguishable photons operated at pulse-repetition rates f up to 1.2 GHz. The quantum light source is based on a p-i-n-doped micropillar cavity with integrated self-organized quantum dots, which exploits cavity quantum electrodynamics effects in the weak coupling regime to enhance the emission of a single quantum emitter coupled to the cavity mode. We achieve an overall single-photon extraction efficiency of (61 +/- 11) % for a device triggered electrically at f = 625 MHz. Analyzing the suppression of multi-photon emission events as a function of excitation repetition rate, we observe single-photon emission associated with g(HBT)((2))(0) values between 0.076 and 0.227 for f ranging from 373 MHz to 1.2 GHz. Hong-Ou-Mandel-type two-photon interference experiments under pulsed current injection at 487 MHz reveal a photon-indistinguishability of (41.1 +/- 9.5) % at a single-photon emission rate of (92 +/- 23) MHz. (C) 2016 Author(s).