论文标题
单光子级光学脉冲的离散频率模式的单发高分辨率识别
Single-shot high-resolution identification of discrete frequency modes of single-photon-level optical pulses
论文作者
论文摘要
频率 - 多头量子通信通常需要单次识别单个光子的频率模式。在本文中，我们提出了一种方案，即使对于自发发射的光子，其发电时间未知的光子也可以通过结合空间和频率到时模式映射来识别具有高分辨率的频率模式。我们还使用原子频率梳子展示了频率模式（100 MHz间隔）与弱相干脉冲的时间模式（435 ns间隔）的映射。此频率间隔接近具有Pr3+离子掺杂的Y2SIO5晶体的原子频率梳量子内存的最小频率模式间隔，并且所提出的方案具有最大程度地利用使用存储器的量子中继器方案的频率多路复用。
Frequency-multiplexed quantum communication usually requires a single-shot identification of the frequency mode of a single photon . In this paper, we propose a scheme that can identify the frequency mode with high-resolution even for spontaneously emitted photons whose generation time is unknown, by combining the time-to-space and frequency-to-time mode mapping. We also demonstrate the mapping of the frequency mode (100 MHz intervals) to the temporal mode (435 ns intervals) for weak coherent pulses using atomic frequency combs. This frequency interval is close to the minimum frequency mode interval of the atomic frequency comb quantum memory with Pr3+ ion-doped Y2SiO5 crystal, and the proposed scheme has the potential to maximize the frequency multiplexing of the quantum repeater scheme with the memory.
