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- W3100306066 endingPage "033014" @default.
- W3100306066 startingPage "033014" @default.
- W3100306066 abstract "Bounds on the ultimate precision attainable in the estimation of a parameter in Gaussian quantum metrology are obtained when the average number of bosonic probes is fixed. We identify the optimal input probe state among generic (mixed in general) Gaussian states with a fixed average number of probe photons for the estimation of a parameter contained in a generic multimode interferometric optical circuit, namely, a passive linear circuit preserving the total number of photons. The optimal Gaussian input state is essentially a single-mode squeezed vacuum, and the ultimate precision is achieved by a homodyne measurement on the single mode. We also reveal the best strategy for the estimation when we are given L identical target circuits and are allowed to apply passive linear controls in between with an arbitrary number of ancilla modes introduced." @default.
- W3100306066 created "2020-11-23" @default.
- W3100306066 creator A5025356866 @default.
- W3100306066 creator A5049201661 @default.
- W3100306066 creator A5070693408 @default.
- W3100306066 creator A5080211688 @default.
- W3100306066 date "2019-03-19" @default.
- W3100306066 modified "2023-09-30" @default.
- W3100306066 title "Optimal Gaussian metrology for generic multimode interferometric circuit" @default.
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