论文标题
来自具有共鸣的电光调节剂的量子点的单个光子的快速有效反复曲线
Fast and efficient demultiplexing of single photons from a quantum dot with resonantly enhanced electro-optic modulators
论文作者
论文摘要
我们报告了一个多光子源，该源基于从共鸣GAAS量子点发出的单个光子的主动反复分流。主动的时间到空间模式取消替代是通过增强的自由空间电气调节器实现的，这使得以38 MHz的高切换速率路由单个光子。我们证明了四个空间模式的路由，高端到端效率为79％，并且测量的四个光子巧合速率为0.17 Hz，主要受单光子源亮度限制，而不是通过弹能本身的效率来限制。我们使用弹能来表征来自量子点的连续发射光子的成对不可区分性，并具有可变的延迟时间。
We report on a multi-photon source based on active demultiplexing of single photons emitted from a resonantly excited GaAs quantum dot. Active temporal-to-spatial mode demultipexing is implemented via resonantly enhanced free-space electro-optic modulators, making it possible to route individual photons at high switching rates of 38 MHz. We demonstrate routing into four spatial modes with a high end-to-end efficiency of 79% and measure a four-photon coincidence rate of 0.17 Hz mostly limited by the single-photon source brightness and not by the efficiency of the demultiplexer itself. We use the demultiplexer to characterize the pairwise indistinguishability of consecutively emitted photons from the quantum dot with variable delay time.
