• Editors' Suggestion

Quantum Zeno effect in parameter estimation

Alexander Holm Kiilerich and Klaus Mølmer
Phys. Rev. A 92, 032124 – Published 21 September 2015

Abstract

The quantum Zeno effect freezes the evolution of a quantum system subject to frequent measurements. 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 system should be probed at specifically determined intervals to yield the optimal estimation of parameters governing the system 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.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
1 More
  • Received 29 June 2015

DOI:https://doi.org/10.1103/PhysRevA.92.032124

©2015 American Physical Society

Authors & Affiliations

Alexander Holm Kiilerich* and Klaus Mølmer

  • Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK 8000 Aarhus C., Denmark

  • *kiilerich@phys.au.dk

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 92, Iss. 3 — September 2015

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review A

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×