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Wide-spectrum superconducting nanowire single photon detector

A superconducting nanowire and single-photon detection technology, applied in the field of light detection, can solve the problems of narrow high-efficiency absorption bandwidth and poor wide-spectrum response ability, and achieve high absorption efficiency and expand the effect of high-efficiency absorption bandwidth.

Active Publication Date: 2017-12-22
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI +1
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Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the object of the present invention is to provide a wide-spectrum superconducting nanowire single-photon detection device, which is used to solve the wide-spectrum response capability of the superconducting nanowire single-photon detection device in the prior art Poor, high-efficiency absorption narrow bandwidth problem

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[0029] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0030] see Figure 1 ~ Figure 2 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic concept of the present invention, although only the components related to the present invention are shown in the diagrams rather than the number, shape and Dimensional drawing, the shape, quantity and proportion of each component can be changed arbitrarily during actual implementation, and t...

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Abstract

The invention provides a wide-spectrum superconducting nanowire single photon detector. The wide-spectrum superconducting nanowire single photon detector comprises a substrate, a mirror which is located on the surface of the substrate, and a lamination structure which is located on the surface of the mirror. The lamination structure comprises at least two layers of superconducting nanowires which are arranged up and down. According to the wide-spectrum superconducting nanowire single photon detector provided by the invention, the absorption of two or more layers of superconducting nanowires is realized by arranging the lamination structure which comprises at least two layers of superconducting nanowires arranged at intervals up and down on the mirror; the efficient absorption bandwidth of the wide-spectrum superconducting nanowire single photon detector is expanded; and the absorption efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of light detection, and relates to a superconducting nanowire single-photon detector, in particular to a wide-spectrum superconducting nanowire single-photon detection device. Background technique [0002] Superconducting Nanowire Single Photon Detector (SNSPD) is a new type of single photon detection device developed in recent years, which can realize high-efficiency single photon detection from visible light to near infrared. Due to its advantages such as high quantum efficiency, low dark count, high detection rate, and low time jitter, SNSPD has been rapidly applied in applications such as quantum information technology, laser communication, satellite-to-earth ranging, bioluminescent detection, and depth imaging. [0003] SNSPD mainly uses low-temperature superconducting ultra-thin film materials, such as NbN, Nb, NbTiN, WSi, etc. The typical thickness is about 5-10 nanometers, and the device usually ado...

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Application Information

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IPC IPC(8): H01L31/09H01L31/0232G01J11/00B82Y30/00
CPCB82Y30/00G01J11/00H01L31/02327H01L31/09
Inventor 李浩尤立星王勇王镇
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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