Key rate of quantum key distribution with hashed two-way classical communication
Shun Watanabe, Ryutaroh Matsumoto, Tomohiko Uyematsu, Yasuhito Kawano · Physical Review A · 2007
We propose an information reconciliation protocol that uses two-way classical communication. The key rates of quantum key distribution (QKD) protocols that use our protocol are higher than those using previously known protocols for a wide range of error rates for the Bennett-Brassard 1984 and six-state protocols. We also clarify the relation between the proposed and known QKD protocols, and the relation between the proposed protocol and entanglement distillation protocols.