论文标题
通过声子脱落的两色激发，高效且难以区分的单光子源
Highly efficient and indistinguishable single-photon sources via phonon-decoupled two-color excitation
论文作者
论文摘要
具有近乎空调效率和无法区分性的单光子来源在量子技术的发展中起着重要作用。但是，发射极的按需激发对源绩效施加了重大局限性。在这里，我们表明，由于发射极及其声子浴之间的去耦效果，连贯的两色泵送允许人口反演任意接近块状量子点的统一。使用该方案驱动微柱单光子源，我们将非常高的光子发射到腔模式（每脉冲0.95光子）中，并在现实的配置中使用出色的不可区分性（0.975），从而消除了单光子源工程对激发方案所施加的限制。
Single-photon sources with near-unity efficiency and indistinguishability play a major role in the development of quantum technologies. However, on-demand excitation of the emitter imposes substantial limitations to the source performance. Here, we show that coherent two-color pumping allows for population inversion arbitrarily close to unity in bulk quantum dots thanks to a decoupling effect between the emitter and its phonon bath. Driving a micropillar single-photon source with this scheme, we calculate very high photon emission into the cavity mode (0.95 photons per pulse) together with excellent indistinguishability (0.975) in a realistic configuration, thereby removing the limitations imposed by the excitation scheme on single-photon source engineering.
