Two-qubit Hamiltonian tomography by Bayesian analysis of noisy data

S.G. Schirmer, D.K.L. Oi

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

We present an empirical strategy to determine the Hamiltonian dynamics of a two-qubit system using only initialization and measurement in a single fixed basis. Signal parameters are estimated from measurement data using Bayesian methods from which the underlying Hamiltonian is reconstructed, up to three unobservable phase factors. We extend the method to achieve full control Hamiltonian tomography for controllable systems via a multistep approach. The technique is demonstrated and evaluated by analyzing data from simulated experiments including projection noise.
Original languageEnglish
Article number022333
Number of pages15
JournalPhysical Review A
Volume80
Issue number2
DOIs
Publication statusPublished - 26 Aug 2009

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Keywords

  • two-qubit
  • Hamiltonian tomography
  • Bayesian analysis
  • noisy data

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