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Conferences > QIM > 2017 > QF6B > QF6B.3

Fisher information and quantum measurement of a microwave field amplitude beyond the standard quantum limit

V. Métillon, M. Penasa, S. Gerlich, T. Rybarczyk, M. Brune, J.M. Raimond, S. Haroche, L. Davidovich, and I. Dotsenko

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Abstract

We report a measurement beyond the standard quantum limit for displacement amplitude acting on a cavity field. As resource we use field entanglement with a Rydberg atom. Measurement optimality is proven by Fisher information analysis.

© 2017 Optical Society of America

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