Picture of a sphere with binary code

Making Strathclyde research discoverable to the world...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. It exposes Strathclyde's world leading Open Access research to many of the world's leading resource discovery tools, and from there onto the screens of researchers around the world.

Explore Strathclyde Open Access research content

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

Full text not available in this repository. (Request a copy from the Strathclyde author)

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.