Weak+Vacuum and One Decoy State with Two Way Quantum Key Distribution Protocol
M. F. Abdul Khir, Iskandar Bahari, S. Ali, S. Shaari
TL;DR
This paper analyzes a two-way four-state quantum key distribution protocol using weak+vacuum and one decoy state, demonstrating nearly doubled maximum secure distance through numerical simulations.
Contribution
It introduces bounds for the protocol with decoy states and shows significant improvements in secure distance via numerical analysis.
Findings
Maximum secure distance nearly doubled
Bounds established for decoy state protocol
Numerical simulations confirm enhanced security
Abstract
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 was significant given that an improvement in maximum secure distance of nearly double is achieved.
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