Indistinguishable single photons with flexible electronic triggering
Indistinguishable single photons with flexible electronic triggering
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DOI：
10.1364/optica.3.000493
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发表时间：
2016-05-20
期刊：
影响因子：
10.4
通讯作者：
Gerardot, Brian D.
中科院分区：
文献类型：
--
作者：
Dada, Adetunmise C.;Santana, Ted S.;Gerardot, Brian D.
量子光子技术的一个关键因素是无法区分的单光子的按需来源。最先进的难以区分的单光子源通常使用具有固定重复频率的共振激发脉冲，产生具有预定到达时间的单光子串。然而，在未来的应用中，来自更大的量子电路或网络的独立电子信号将触发无法区分的光子的产生。此外，希望将光子源运行到其寿命所施加的限制。在这里，我们报道了一种真正的按需方法的应用，在这种方法中，我们可以电子地触发单个光子的精确到达时间，并基于来自单个InAs/GaAs量子点的共振荧光来控制激励脉冲的持续时间。我们详细研究了激发pi脉冲的有限持续时间对光子反聚束程度的影响。最后，我们演示了使用这种按需方法可以产生高度不可区分的单光子，从而为未来的应用提供了最大的灵活性。(C)2016年度美国光学学会
A key ingredient for quantum photonic technologies is an on-demand source of indistinguishable single photons. State-of-the-art indistinguishable single-photon sources typically employ resonant excitation pulses with fixed repetition rates, creating a string of single photons with predetermined arrival times. However, in future applications, an independent electronic signal from a larger quantum circuit or network will trigger the generation of an indistinguishable photon. Further, operating the photon source up to the limit imposed by its lifetime is desirable. Here, we report on the application of a true on-demand approach in which we can electronically trigger the precise arrival time of a single photon as well as control the excitation pulse duration based on resonance fluorescence from a single InAs/GaAs quantum dot. We investigate in detail the effect of the finite duration of an excitation pi pulse on the degree of photon antibunching. Finally, we demonstrate that highly indistinguishable single photons can be generated using this on-demand approach, enabling maximum flexibility for future applications. (C) 2016 Optical Society of America