论文标题
来自钻石锗胶合色中心的共振荧光的量子干扰
Quantum interference of resonance fluorescence from Germanium-vacancy color centers in diamond
论文作者
论文摘要
来自量子发射极的共振荧光是提取难以区分的光子的理想来源。通过使用交叉极化抑制激光散射，我们观察到在低温温度下钻石中GEV颜色中心的共振荧光。带有$ T_2/2T_1 \ SIM0.86 $的Fourier-Transform限制线宽排放允许基于单个GEV颜色中心的两光孔干扰。在脉冲激发下，24 ns分离的光子的可见性为$ 0.604 \ pm0.022 $，而连续波激发导致1.05辐射寿命的合并时间窗口。与单次旋转状态的单次读数一起，它为建立一个带有GEV颜色中心的量子网络铺平了道路。
Resonance fluorescence from a quantum emitter is an ideal source to extract indistinguishable photons. By using the cross polarization to suppress the laser scattering, we observed resonance fluorescence from GeV color centers in diamond at cryogenic temperature. The Fourier-transform-limited linewidth emission with $T_2/2T_1\sim0.86$ allows for two-photon interference based on single GeV color center. Under pulsed excitation, the 24 ns separated photons exhibit a Hong-Ou-Mandel visibility of $0.604\pm0.022$, while the continuous-wave excitation leads to a coalescence time window of 1.05 radiative lifetime. Together with single-shot readout of spin states, it paves the way towards building a quantum network with GeV color centers in diamond.
