Experimental scheme for unambiguous discrimination of linearly independent symmetric states
Abstract
We propose an optimal discrimination scheme for a case of four linearly independent nonorthogonal symmetric quantum states, based on linear optics only. The probability of discrimination is in agreement with the optimal probability for unambiguous discrimination among N symmetric states [Phys. Lett. A 250, 223 (1998)]. The experimental setup can be extended for the case of discrimination among 2M nonorthogonal symmetric quantum states.
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