Describing type-II structure of eavesdropper’s scheme

MN Min Namkung
YK Younghun Kwon
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In this structure, the following bipartite state between Bob and Eve is considered:

Then, each Kb(B)IEσa,ABKb(B)IE is obtained by

We derive the success probability of eavesdropping as

where τab,E are defined as

From Eqs. (48) and (50), the success probability of eavesdropping in Eq. (49) is obtained by Eq. (32).

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