Information coordination method easily implemented by hardware in quantum key distribution
A technology of quantum key distribution and hardware implementation, which is applied in the field of quantum information, can solve the problems affecting the speed of quantum key distribution and the consumption of punching schemes, and achieve the effect of low storage capacity
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[0019] Embodiment 1: An information coordination method in quantum key distribution that is convenient for hardware implementation. Set the two parties for information coordination as A and B. After A and B pre-generate the mother code and sub-code, the base matrix of the mother code and The policy of row merging is stored; among them, the information coordination steps are as follows:
[0020] Step 1, A and B estimate the error rate of the channel by random sampling; Step 2, A and B select a suitable LDPC (Low Density Parity Check, Low Density Parity Check) code through the line combination method, and A uses the obtained Syndrome S 1 =H×X T Send to B, X represents the key string in the hands of A; step 3, B receives S 1 Finally, find the syndrome S corresponding to the key string Y in your hand 2 =H'Y T , if S 1 and S 2 If they are the same, it means that A and B have the same key string; if they are different, then B according to S 1 Perform decoding and error correc...
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