Superconducting nanowire-based single-photon polarization detection device and implementation device thereof

A single-photon detector and superconducting nanowire technology, which is applied in the field of light detection, can solve problems such as the difficulty of improving the process, the dependence of photoelectric detection performance, and the sensitivity not reaching the single-photon level, and achieve the effect of reducing the difficulty of the process

CN111430396APending Publication Date: 2020-07-17SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
2 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-07-17

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a superconducting nanowire-based single-photon polarization detection device and an implementation device thereof. The superconducting nanowire-based single-photon polarization detection device comprises a substrate and a pixel layer arranged on the substrate, wherein the pixel layer comprises one or more super pixel units, each super-pixel unit comprises at least four pixel units, and each pixel unit is composed of a zigzag superconducting nanowire; the angles of the superconducting nanowire structures of the pixel units in the parallel direction are different, and the polarization state of the linearly polarized light can be solved by counting the light response of the four superpixels to the polarization angle of the polarized light. Compared with an existing semiconductor polarization detection device, the superconducting nanowire structure has dual functions of a linear polarizer and a photon detector, not only integrates the advantages of a superconducting nanowire structure single photon detector, but also has the characteristics of expandable device scale, simple structure and the like, so that the superconducting nanowire-based single-photon polarization detection device is expected to be applied to the polarization detection and imaging, quantum communication, astronomical observation and the like in a weak light environment.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present application relates to the field of light detection, in particular to a superconducting nanowire-based single-photon polarization detection device and its realization device. Background technique

[0002] Polarization is an important piece of information about light. Polarization detection (PD), as a useful supplement to intensity detection, can expand the amount of information from three dimensions (light intensity, spectrum, and space) to seven dimensions (light intensity, spectrum, space, degree of polarization, polarization azimuth, polarization The direction of ellipse and rotation), which helps to improve the accuracy of target detection and object recognition.

[0003] The structure of existing semiconductor polarization detectors is generally divided into time-division detection, amplitude-division detection, aperture-division detection and focal-plane detection. On the focal plane of the pixel, every four pixels form a super pixe...

Examples

Embodiment Construction

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0044]Reference herein to "one embodiment" or "an embodiment" refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present application. In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom" etc. is based on the orientation or positional relationship shown in the drawings, and is only for It i...