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Modulation variance-based security code rate global optimization method and device

A global optimization and security code technology, applied in secure communication devices and key distribution, can solve the problem that the security code rate of the CV-QKD system needs to be further optimized and improved, and achieve the effect of realizing the security code rate

Active Publication Date: 2021-02-05
NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP
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  • Description
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  • Application Information

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Problems solved by technology

[0011] In view of the above-mentioned deficiencies in the prior art, a global optimization method and device for secure code rate based on modulation variance provided by the present invention solves the problem that the secure code rate of CV-QKD system needs to be further optimized and improved

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  • Modulation variance-based security code rate global optimization method and device
  • Modulation variance-based security code rate global optimization method and device
  • Modulation variance-based security code rate global optimization method and device

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Embodiment Construction

[0064] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0065] Such as figure 1 As shown, a method for global optimization of security code rate based on modulation variance includes the following steps:

[0066] S1. Determine the CV-QKD system state parameters; the system state parameters include electrical noise, over-noise, detection efficiency and channel transmittance. The formula for calculating channel transmittance is:

[0067]

[0068] In the above formula, T is th...

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Abstract

The invention discloses a modulation variance-based security code rate global optimization method and device. Based on the current state of the CV-QKD system, the optimal value of the security code rate and the optimal modulation variance value corresponding to the optimal security code rate can be obtained through an optimization method according to the error correction performance (the relationship between the modulation variance and FER) of the error correction matrix. According to the invention, the modulation variance corresponding to the optimal security code rate is quantitatively calculated for the current system state, and the maximization of the security code rate is realized.

Description

technical field [0001] The present invention relates to the technical field of global optimization, in particular to a method and device for global optimization of security code rate based on modulation variance. Background technique [0002] Quantum Key Distribution (Quantum Key Distribution, QKD) can provide an unconditionally secure off-site online key distribution method, and its security is guaranteed by the basic principles of quantum physics. Based on the quantum non-cloning theorem and the uncertainty relationship, any eavesdropping on the quantum key distribution system will generate disturbances, which can be detected by both legal communication parties, thus ensuring the security of the quantum key. Quantum key distribution technology can be divided into two categories: discrete variable (DiscreteVariable, DV) and continuous variable (Continuous Variable, CV). The current Continuous Variable Quantum Key Distribution (CV-QKD) system is mainly implemented based on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08
CPCH04L9/0858
Inventor 马荔徐兵杰李扬杨杰黄伟罗钰杰
Owner NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP