Trade-offs in the simultaneous quantum-limited estimation of phase and phase diffusion

Magdalena Szczykulska; Tillmann Baumgratz; Animesh Datta

doi:10.1364/QIM.2017.QT6A.15

Quantum Information and Measurement (QIM) 2017
OSA Technical Digest (online) (Optica Publishing Group, 2017),
paper QT6A.15
•https://doi.org/10.1364/QIM.2017.QT6A.15

Trade-offs in the simultaneous quantum-limited estimation of phase and phase diffusion

Magdalena Szczykulska, Tillmann Baumgratz, and Animesh Datta

Quantum Information and Measurement 2017

Paris France
5–7 April 2017
ISBN: 978-1-943580-26-2

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Poster Session (QT6A)

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M. Szczykulska, T. Baumgratz, and A. Datta, "Trade-offs in the simultaneous quantum-limited estimation of phase and phase diffusion," in Quantum Information and Measurement (QIM) 2017, OSA Technical Digest (online) (Optica Publishing Group, 2017), paper QT6A.15.

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Abstract

We examine the precision attainable in the joint estimation of phase and diffusion by fixed particle number states within the quantum Cramer-Rao bound framework. We provide analytical understanding of the large and small diffusion regimes.

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