Optical Realization of Optimal Unambiguous Discrimination for Pure and Mixed Quantum States
Optical Realization of Optimal Unambiguous Discrimination for Pure and Mixed Quantum States
Quantum mechanics forbids deterministic discrimination among nonorthogonal states. Nonetheless, the capability to distinguish nonorthogonal states unambiguously is an important primitive in quantum information processing. In this work, we experimentally implement generalized measurements in an optical system and demonstrate the first optimal unambiguous discrimination between three nonorthogonal states, with a success …