SINGLE PHOTON DETECTION DEVICE AND SINGLE PHOTON DETECTION METHOD

    公开(公告)号:EP4407284A1

    公开(公告)日:2024-07-31

    申请号:EP22951754.5

    申请日:2022-10-13

    Abstract: The invention discloses a single-photon detection device comprising an interference unit. The interference unit comprises: a signal dividing module configured to divide input signals into first signals and second signals; a first signal path coupled to the signal dividing module and configured to receive and transmit the first signals; a second signal path coupled to the signal dividing module and configured to receive the second signals and filter out and transmit signals with a preset frequency component; a phase shift module arranged in the first signal path or the second signal path and configured to shift the phase of transmission signals by 180 degrees; and a coupling module coupled to the first signal path and the second signal path and configured to receive output signals of the first signal path and the second signal path and then output after coupling. The single-photon detection device provided by the invention eliminates a large number of gating interference signals, and the detection efficiency, post-pulse effect and time resolution of the single-photon detection device are significantly optimized.

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