Base vector comparison network data compression transmission method and device for qkd system
A technology of network data and compression method, applied in the field of quantum communication, can solve the problems of network data compression by basis vector ratio, and the effective detection efficiency of single-photon detectors without considering the attenuation of quantum channel, so as to achieve efficient compression and avoid coding too long. Effect
Active Publication Date: 2021-07-02
BEIJING ZHONGCHUANGWEI NANJING QUANTUM COMM TECH CO LTD
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[0011] This application provides a base vector comparison network data compression transmission method and device of a QKD system to solve the problem that the existing compression method does not consider related factors such as the attenuation of the quantum channel and the effective detection efficiency of the single photon detector. The data still has issues with further compression
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[0069] 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.
[0070] The first aspect of the present application provides a base vector comparison network data compression method of the QKD system, and its flow chart can be found in figure 1 As shown in the schematic diagram, this application uses the BB84 protocol as an example, and the principles of other protocols (such as the B92 protocol, etc.) or other quantum states (such as three-stat...
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The present application provides a base vector comparison network data compression transmission method and device for a QKD system, wherein the compression method includes: obtaining the detection probability q of the current QKD system; ; Obtain the position information and base vector information of each group of detection events; perform run-length coding on the position information of each group of detection events with the length of the coding segment as the code unit length; add an extra bit to the last bit of data of each group of run-length coding The data is used as the identification of the base vector information, and the compressed base vector comparison network data is obtained. Therefore, the compression method of the present application fully considers the different occurrence probabilities of each fixed-length symbol, effectively reduces the length after encoding, and thus realizes efficient compression of base vector comparison network data.
Description
technical field [0001] The present application relates to the technical field of quantum communication, in particular to a base vector comparison network data compression transmission method and device of a QKD system. Background technique [0002] With the development of history, quantum informatics, born of the combination of quantum mechanics and informatics, can efficiently complete tasks that classical informatics cannot accomplish. For example, quantum computers can perform intrinsic parallel computing, and their potential computing capabilities far exceed current Classical computer, Shor quantum algorithm can crack the currently widely used RSA key; in 1984, Bennett et al. proposed a quantum key distribution scheme, which can realize information-theoretic security key distribution. After nearly 30 years of development, quantum key distribution (quantum key distribution, QKD) related technologies have gradually developed and matured, and have entered the stage of engin...
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IPC IPC(8): H04L9/08H04L29/06
CPCH04L9/0819H04L9/0852H04L69/04
Inventor 陈建刘鹏冯克达
Owner BEIJING ZHONGCHUANGWEI NANJING QUANTUM COMM TECH CO LTD