Sensitivity optimization in quantum parameter estimation

Details Sensitivity optimization in quantum parameter estimation Sensitivity optimization in quantum parameter estimation

2001-04-24

arxiv.org/abs/quant-ph/0104116v1

Phys. Rev. A, 64: 032111 (2001)

Physics

Quantum Physics

15 pages, RevTeX

Scientific paper

10.1103/PhysRevA.64.032111

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 non-stationary signals, leading us to propose corresponding generalizations of the Standard Quantum Limit for force detection.

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