公开(公告)号：US20230266163A1

公开(公告)日：2023-08-24

申请号：US17264844

申请日：2020-11-30

Applicant: TIANJIN UNIVERSITY

Inventor： Xiaolong HU ,  Yun MENG ,  Kai ZOU ,  Nan HU ,  Liang XU

IPC: G01J1/44

CPC classification number: G01J1/44 ,  G01J2001/442 ,  B82Y15/00

Abstract: The present invention discloses a superconducting nanowire single photon detector, comprises an arced fractal nanowire structure and the optical cavity structure; the arced fractal nanowire structures being used to alleviate the current-crowding effect and realize that the detection efficiency is insensitive to the polarization states of incident photons, and the arced fractal nanowire structures including parallel-connected arced fractal nanowires and serial-connected arced fractal nanowires; the optical cavity structure being used to achieve simultaneous optimization of the internal quantum efficiency and the absorption efficiency. The invention can be widely used in many fields such as optical communication, single-photon imaging, fluorescence detection, quantum optics, etc. The excellent performance of the detector can significantly promote the development and progress of these fields.