We utilize a discrete (sequential) measurement protocol to investigate
quantum process tomography of a single two-level quantum system, with an
unknown initial state, undergoing Rabi oscillations. The ignorance of the
dynamical parameters is encoded into a continuous-variable classical system
which is coupled to the two-level quantum system via a generalized Hamiltonian.
This combined estimate of the quantum state and dynamical parameters is updated
by using the information obtained from sequential measurements on the quantum
system and, after a sufficient waiting period, faithful state monitoring and
parameter determination is obtained. Numerical evidence is used to demonstrate
the convergence of the state estimate to the true state of the hybrid system.Comment: 7 pages, 2 figure
