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Weak + Vacuum and one decoy states with two way quantum key distribution protocol. (English) Zbl 1271.81060

Summary: We present relevant bounds for the case of weak+vacuum decoy state and one decoy state for a two-way four states Quantum Key Distribution (QKD) protocol. The numerical simulation result is significant given that an improvement in maximum secure distance of nearly twice the original one is achieved.

MSC:

81P94 Quantum cryptography (quantum-theoretic aspects)
94A60 Cryptography
81T80 Simulation and numerical modelling (quantum field theory) (MSC2010)
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References:

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