Method for stabilizing quantum light source and stabilized quantum light source

A quantum and light source technology, applied in the field of quantum communication, can solve the problem of unstable output of quantum light source, achieve the effect of stable light intensity, simple combination structure, and ensure stability

Active Publication Date: 2018-09-14
TURING AI INST NANJING CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the purpose of this application is to provide a method for stabilizing the quantum light source and a stable quantum light source to solve the problem of unstable output of the quantum light source in the prior art

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  • Method for stabilizing quantum light source and stabilized quantum light source
  • Method for stabilizing quantum light source and stabilized quantum light source
  • Method for stabilizing quantum light source and stabilized quantum light source

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[0033] The implementation of the present application will be described by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification.

[0034] In the following description, reference is made to the accompanying drawings, which illustrate several embodiments of the application. It is to be understood that other embodiments may be utilized, and mechanical, structural, electrical, and operational changes may be made without departing from the spirit and scope of the present application. The following detailed description should not be considered limiting, and the scope of the embodiments of the present application is defined only by the claims of the issued patent.

[0035]The terminology used herein is for describing particular embodiments only and is not intended to limit the application. Spatially relative terms such as "upper", "lower", "left", "...

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Abstract

The invention provides a method for stabilizing a quantum light source and the stabilized quantum light source. The method comprises the following main steps: splitting a beam of coherent light into afirst light beam and a second light beam, and adjusting the second light beam till the single photon intensity for output; and performing light intensity detection on the received first light beam toobtain a light intensity value corresponding to the first light beam; according to light intensity values of a plurality of prestored historical time nodes and a light intensity value acquired at thecurrent time node, performing regression analysis to predict a light intensity value of a next time node, and based on the predicted light intensity value, acquiring a light intensity deviation valueto adjust the produced coherent light so as to stably output the second light beam.

Description

technical field [0001] The present application relates to the technical field of quantum communication, in particular to a method for stabilizing a quantum light source and a stable quantum light source. Background technique [0002] Weak and strong laser light sources play an important role in various fields such as optics, communication, remote sensing detection, and industrial production. Specifically, it is of great significance in optical interference experiments of quantum optics, quantum secure communication, continuous variable quantum computing, quantum measurement, and quantum imaging. In these experiments, the intensity stability of the laser light source is very important. For example, in the quantum key distribution protocol, the realization of decoy state technology depends entirely on the light intensity stability of the laser light source. Only when the light intensity is stable, the communication parties can accurately estimate the upper limit of the infor...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/10G01J1/42
CPCG01J1/42G02B27/10
Inventor 马雄峰曾培
Owner TURING AI INST NANJING CO LTD
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