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arXiv · 1506.08763

Quantum Zeno effect in parameter estimation

Alexander Holm Kiilerich·Klaus Mølmer
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Abstract

The quantum Zeno effect freezes the evolution of a quantum system subject to frequent measure- ments. We apply a Fisher information analysis to show that because of this effect, a closed quantum system should be probed as rarely as possible while a dissipative quantum systems should be probed at specifically determined intervals to yield the optimal estimation of parameters governing the sys- tem dynamics. With a Bayesian analysis we show that a few frequent measurements are needed to identify the parameter region within which the Fisher information analysis applies

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Alexander Holm Kiilerich, Klaus Mølmer. 2015-09-22. Quantum Zeno effect in parameter estimation. https://doi.org/10.1103/physreva.92.032124

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