Method for carrying out cascading error correction for error code in quantum secret key distribution postprocessing
A quantum key distribution and post-processing technology, applied in the field of quantum key error correction, can solve the problems of low error correction efficiency, large key consumption, encryption and decryption errors, etc., to achieve the effect of improving error correction efficiency
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[0053] The data structure of the Cascade protocol during implementation is as follows image 3 As shown, Cascade.cpp is the main class of the protocol, which has the implementation process of the entire protocol inside, and performs error correction according to the execution flow of the Cascade protocol. It calls the function of Data_Interface.cpp to establish a connection between Alice at the sending end and Bob at the receiving end; uses the function of CommuData.cpp to encapsulate and decapsulate the interaction information between Alice and Bob; calls the data structure and algorithm provided in CascadeRecord.cpp Perform parity check and calculation, divide into blocks, locate the bit error position, locate the word block position when the error is accompanied by backtracking, record the position correspondence of random rearrangement, etc.; use the function in Para.cpp to get the bit error rate of the protocol input and key.
[0054] The communication parties set up the...
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