Bound on local minimum-error discrimination of bipartite quantum states
Donghoon Ha, Jeong San Kim · Physical Review A · 2022
We consider the optimal discrimination of bipartite quantum states and provide an upper bound for the maximum success probability of optimal local discrimination. We also provide a necessary and sufficient condition for a measurement to realize the upper bound. We further establish a necessary and sufficient condition for this upper bound to be saturated. Finally, we illustrate our results using an example.