公开(公告)号：US20220170786A1

公开(公告)日：2022-06-02

申请号：US17671636

申请日：2022-02-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wenye LIANG ,  Yuping WU ,  Zhengjun WEI

IPC: G01J1/46

Abstract: This application provides a single-photon detection apparatus, including a phase-reversed reflection branch, a single-photon sensing device, and a phase-unreversed reflection branch, an input signal is divided into two input signals, and the two input signals respectively arrive at the phase-reversed reflection branch and the single-photon sensing device; the phase-reversed reflection branch is configured to perform phase-reversed reflection processing on a received input signal, to obtain a phase-reversed signal; the single-photon sensing device is configured to send a received input signal to the phase-unreversed reflection branch, and is further configured to: sense a photon, generate photon information, and output a first branch signal; the phase-unreversed reflection branch is configured to perform phase-unreversed reflection processing on the input signal that passes through the single-photon sensing device, to obtain a second branch signal; and the first branch signal is superimposed with the second branch signal, to obtain the photon information.