Optimal conclusive discrimination of two states can be achieved locally
Zhengfeng Ji, Hongen Cao, Mingsheng Ying · Physical Review A · 2005
This paper constructs a local operation and classical communication protocol that achieves the global optimality of conclusive discrimination of any two pure states with arbitrary a priori probability. This can be interpreted that there is no ``nonlocality'' in the conclusive discrimination of two multipartite pure states.