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Sensitivity optimization in quantum parameter estimation

Verstraete, F. and Doherty, A. C. and Mabuchi, H. (2001) Sensitivity optimization in quantum parameter estimation. Physical Review A, 64 (3). Art. No. 032111. ISSN 1050-2947. doi:10.1103/PhysRevA.64.032111.

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We present a general framework for sensitivity optimization in quantum parameter estimation schemes based on continuous (indirect) observation of a dynamical system. As an illustrative example, we analyze the canonical scenario of monitoring the position of a free mass or harmonic oscillator to detect weak classical forces. We show that our framework allows the consideration of sensitivity scheduling, as well as estimation strategies for nonstationary signals, leading us to propose corresponding generalizations of the standard quantum limit for force detection.

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Additional Information:©2001 The American Physical Society Received 24 April 2001; published 17 August 2001 This work was supported by the National Science Foundation, under Contract Nos. PHY-9987541 and EIA-0086038, the A. P. Sloan Foundation, and the K. U. Leuven. F.V. is grateful to Bart De Moor.
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2030
Deposited By: Archive Administrator
Deposited On:02 Mar 2006
Last Modified:08 Nov 2021 19:44

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