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Title:	Quantum Limits on Parameter Estimation
Author:	Goldstein, Garry; Lukin, Mikhail D.; Cappellaro, Paola Note: Order does not necessarily reflect citation order of authors.
Citation:	Goldstein, Garry, Mikhail D. Lukin and Paola Cappellaro. 2012. Quantum limits on parameter estimation. Department of Physics, Harvard University.
Full Text & Related Files:	Goldstein_QuantumLimits.pdf (212.7Kb; PDF)
Abstract:	We present a new proof of the quantum Cramer-Rao bound for precision parameter estimation and extend it to a more general class of measurement procedures. We analyze a generalized framework for parameter estimation that covers most experimentally accessible situations, where multiple rounds of measurements, auxiliary systems or external control of the evolution are available. The proof presented demonstrates the equivalence of these more general metrology procedures to the simplest optimal strategy for which the bound is proven: a single measurement of a two-level system interacting with a time-independent Hamiltonian.
Other Sources:	http://arxiv.org/abs/1001.4804
Terms of Use:	This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page:	http://nrs.harvard.edu/urn-3:HUL.InstRepos:8979490

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  Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University

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