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- W1994653307 abstract "We extend the concept of probabilistic unambiguous discrimination of quantum states to quantum state estimation. We consider a scenario where the measurement device can output either an estimate of the unknown input state or an inconclusive result. We present a general method how to evaluate the maximum fidelity achievable by the probabilistic estimation strategy. We illustrate our method on two explicit examples: estimation of a qudit from a pair of conjugate qudits and phase covariant estimation of a qubit from N copies. We show that by allowing for inconclusive results it is possible to reach estimation fidelity higher than that achievable by the best deterministic estimation strategy." @default.
- W1994653307 created "2016-06-24" @default.
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- W1994653307 date "2006-09-14" @default.
- W1994653307 modified "2023-09-27" @default.
- W1994653307 title "Optimal probabilistic estimation of quantum states" @default.
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- W1994653307 doi "https://doi.org/10.1088/1367-2630/8/9/192" @default.
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