论文标题
来自电信C波段中纯纯单光子的纯纯单光子来源的高排放率
High emission rate from a Purcell-enhanced, triggered source of pure single photons in the telecom C-band
论文作者
论文摘要
几种发射的特征是标记半导体量子点作为前瞻性量子实现的有希望的非经典光源。对于长距离传输[1]和基于SI的片上处理[2，3]，匹配电信C波段[4]的可能性很突出，而源亮度和高单光子纯度实际上是任何量子实现的关键特征[5，6]。在这里，我们提出了在电信c波段中发出的INAS/INGAAS/GAAS量子点，该点耦合到圆形的Bragg Graging。发射的增强功能可以同时具有高亮度，而纤维耦合的单光子计数率为13.9MHz，激发重复速率为228MHz（NA = 0.6的第一范围收集效率Ca. 17％= 0.6），同时保持G（2）（2）（2）（0）（0）（0）（0）（0）= 0.0052。此外，与紧凑的冷冻冷却器最多可达到40K的温度兼容性，进一步强调了对实行实施的适用性。
Several emission features mark semiconductor quantum dots as promising non-classical light sources for prospective quantum implementations. For long-distance transmission [1] and Si-based on-chip processing[2, 3], the possibility to match the telecom C-band [4] stands out, while source brightness and high single-photon purity are key features in virtually any quantum implementation [5, 6]. Here we present an InAs/InGaAs/GaAs quantum dot emitting in the telecom C-band coupled to a circular Bragg grating. The Purcell enhancement of the emission enables a simultaneously high brightness with a fiber-coupled single-photon count rate of 13.9MHz for an excitation repetition rate of 228MHz (first-lens collection efficiency ca. 17% for NA = 0.6), while maintaining a low multi-photon contribution of g(2)(0) = 0.0052. Moreover, the compatibility with temperatures of up to 40K attainable with compact cryo coolers, further underlines the suitability for out-of-the-lab implementations.
