Model discrimination for dephasing two-level systems
  The problem of model discriminability and parameter identifiability for dephasing two-level systems subject to Hamiltonian control is studied. Analytic solutions of the Bloch equations are used to derive explicit expressions for observables as functions of time for different models. This information is used to give criteria for model discrimination and parameter estimation based on simple experimental paradigms. 
Erling Gong, Weiwei Zhou, Sophie Schirmer
quant-ph