Experimental scheme for unambiguous discrimination of linearly independent symmetric states
Experimental scheme for unambiguous discrimination of linearly independent symmetric states
We propose an experimental setup for discriminating four linearly independent nonorthogonal symmetric quantum states. The setup is based on linear optics only and can be configured to implement both optimal unambiguous state discrimination [Chefles and Barnett, Phys. Lett. A 250, 223 (1998)] and minimum error discrimination. In both cases, the …