SINGLE-PHOTON TIMING SYSTEM AND METHOD
    26.
    发明公开

    公开(公告)号:US20240183709A1

    公开(公告)日:2024-06-06

    申请号:US18287829

    申请日:2022-04-20

    CPC classification number: G01J1/44 G01J3/1895 G01J3/2803 G01J2001/442

    Abstract: A time-to-frequency converter transforms an initial single-photon pulse into a transformed pulse such that the temporal waveform of the initial pulse is mapped to the spectrum of the transformed pulse. The time-to-frequency converter includes a dispersive optical element followed by a time lens. The spectrum of the transformed pulse is then measured to determine the arrival time of the initial pulse. The spectrum can be measured using a photon-counting spectrometer that spatially disperses the transformed pulse onto an single-photon detector array. Alternatively. an additional dispersive element can be used with the time-to-frequency converter to implement a time magnifier. The arrival time of the resulting time-magnified pulse can then be measured using time-correlated single-photon counting. This arrival time can then be divided by the magnification factor of the time magnifier to obtain the arrival time of the initial pulsc.

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