The total variance of multiple-phase estimation (IMAGE)

National Research Council of Science & Technology

The total variance of multiple-phase estimation

Caption

The total variance of multiple-phase estimation obtained by the CRB and the QCRB as a function of the number of unknown phases d with two probe states. It clearly shows that multi-mode N00N states always have better sensitivity compared to coherent states.

Credit

Korea Institute of Science and Technology(KIST)

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