Relating quantum privacy and quantum coherence: An operational approach

An operational approach for relating quantum privacy and quantum coherence was presented. The protocols needed to perform the secret key distillation with optimal rate were described. The method by which optimal entanglement generation rates could be achieved was shown by implementing a class of secret key arrangement protocols. The study show that using one-way and two-way classical communication, and long standing problems of quantum information theory the problem of optimal key generation can be reduced.