Single shot parameter estimation via continuous quantum measurement

Details Single shot parameter estimation via continuous quantum measurement Single shot parameter estimation via continuous quantum measurement

2008-11-04

arxiv.org/abs/0811.0601v1

Phys. Rev. A 79, 022314 (2009)

Physics

Quantum Physics

9 pages, 5 images

Scientific paper

10.1103/PhysRevA.79.022314

We present filtering equations for single shot parameter estimation using continuous quantum measurement. By embedding parameter estimation in the standard quantum filtering formalism, we derive the optimal Bayesian filter for cases when the parameter takes on a finite range of values. Leveraging recent convergence results [van Handel, arXiv:0709.2216 (2008)], we give a condition which determines the asymptotic convergence of the estimator. For cases when the parameter is continuous valued, we develop quantum particle filters as a practical computational method for quantum parameter estimation.

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