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A method and device for improving error correction efficiency of quantum key distribution system

A technology of quantum key distribution and error correction methods, which is applied in the field of improving the error correction efficiency of quantum key distribution systems, can solve the problems of low efficiency of QKD error correction process and low efficiency of QKD post-processing, so as to reduce hardware pressure and reduce The requirements of matching degree and the effect of improving error correction efficiency

Active Publication Date: 2020-12-04
BEIJING ZHONGCHUANGWEI NANJING QUANTUM COMM TECH CO LTD
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Problems solved by technology

[0005] This application provides a method and device for improving the error correction efficiency of the quantum key distribution system, so as to solve the problems of low efficiency of QKD error correction process and low efficiency of QKD post-processing in the prior art

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  • A method and device for improving error correction efficiency of quantum key distribution system
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  • A method and device for improving error correction efficiency of quantum key distribution system

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Embodiment Construction

[0032]In order to make the above objects, features and advantages of the present application more obvious and comprehensible, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] The first aspect of the present application provides a method for improving the error correction efficiency of a quantum key distribution system. The method includes: obtaining a corresponding data set each time the original key reaches a preset data volume, and the data volume can be calculated according to It depends on the processing capability of the system error correcti...

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Abstract

The invention provides a method and device for improving the error correction efficiency of a quantum key distribution system. The method comprises the steps: obtaining a corresponding data set everytime an original key reaches a preset data size; controlling each step in the error correction method to process the data set in a pipelined manner; and after the iterative processing of the data setin the error correction is completed according to the error correction method, continuing the iterative processing of the new data set and the remaining data set in the error correction according tothe error correction method. Therefore, in the error correction method provided by the invention, the data set is subjected to pipelined processing in each step; therefore, each step in the error correction method does not need to wait for the feedback result to process the next data set data any more, and the whole error correction process does not need to wait for the next data set data to be processed after the processing of a certain data set is completed, so that the error correction efficiency of the QKD and the post-processing efficiency of the QKD are improved.

Description

technical field [0001] The present application relates to the technical field of quantum communication, in particular to a method and device for improving the error correction efficiency of a quantum key distribution system. Background technique [0002] Quantum key distribution system (QKD) needs to do post-processing work on the original password, so as to obtain the final key with absolute security. The post-processing process of QKD generally includes: base vector comparison, error correction, privacy amplification and other steps. Base vector comparison processes the original data to the data processing of the original key; Correct the inconsistencies in the key, and finally obtain a consistent key; privacy amplification is the process of transforming the key obtained in the error correction process into the final required length through a random matrix. [0003] Among them, the error correction methods include negotiating segment length, parity check, Hamming error co...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08H04L1/00
CPCH04L1/0061H04L1/0071H04L9/0819H04L9/0852H04L9/0858
Inventor 刘鹏张立华
Owner BEIJING ZHONGCHUANGWEI NANJING QUANTUM COMM TECH CO LTD
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