Continuous variable quantum key distribution adaptive coordination method
A technology of quantum key distribution and coordination method, which is applied in the field of continuous variable quantum key distribution adaptive coordination, which can solve problems such as code rate reduction, and achieve the effects of improving coordination, high coordination efficiency, and improving decoding performance
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[0056] Such as Figure 1~3 As shown, a continuous variable quantum key distribution adaptive coordination method, assuming code length N=16, code rate R=1 / 2, step size K step =2, the minimum adaptive length K min =4, the specific steps are:
[0057] Step 1. The sending end Alice and the receiving end Bob share the coherent state information of continuous variable quantum key distribution (CVQKD), that is, the sending end Alice sends the coherent state information x, which is transmitted in the quantum channel distributed with Gaussian random noise;
[0058] Bob at the receiving end obtains information y=x+z, z is the channel noise of the quantum channel, which obeys the Gaussian distribution z~N(0,σ 2 ) d ;
[0059] Both parties normalize their coherent state information to get where |*| is the norm of *,
[0060] Step 2. Under the framework of reverse coordination, Bob at the receiving end generates the original key information m, and combines m with CRC to obtain th...
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