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Quantum system identification by Bayesian analysis of noisy data: Beyond Hamiltonian tomography

Schirmer, S. G. and Oi, D. K. L. (2010) Quantum system identification by Bayesian analysis of noisy data: Beyond Hamiltonian tomography. Laser Physics, 20 (5). pp. 1203-1209. ISSN 1054-660X

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Abstract

We consider how to characterize the dynamics of a quantum system from a restricted set of initial states and measurements using Bayesian analysis. Previous work has shown that Hamiltonian systems can be well estimated from analysis of noisy data. Here we show how to generalize this approach to systems with moderate dephasing in the eigenbasis of the Hamiltonian. We illustrate the process for a range of three-level quantum systems. The results suggest that the Bayesian estimation of the frequencies and dephasing rates is generally highly accurate and the main source of errors are errors in the reconstructed Hamiltonian basis.

Item type: Article
ID code: 30211
Keywords: laser physics, noisy data, quantum system identification, Bayesian analysis, Hamiltonian tomography, Optics. Light, Instrumentation, Industrial and Manufacturing Engineering, Atomic and Molecular Physics, and Optics, Condensed Matter Physics
Subjects: Science > Physics > Optics. Light
Department: Faculty of Science > Physics
Related URLs:
Depositing user: Pure Administrator
Date Deposited: 11 May 2011 11:18
Last modified: 27 Mar 2014 09:18
URI: http://strathprints.strath.ac.uk/id/eprint/30211

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