Process tomography via sequential measurements on a single quantum system
Date
2015-09-03
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Abstract
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.
Description
CITATION: Bassa, H. et al. 2015. Process tomography via sequential measurements on a single quantum system, Physical Review A, 92:032102, doi:10.1103/PhysRevA.92.032102.
The original publication is available at http://journals.aps.org/pra
The original publication is available at http://journals.aps.org/pra
Keywords
Tomography, Sequential processing (Computer Science), Quantum systems, Oscillations, Hamiltonian systems, Measurements, sequential
Citation
Bassa, H. et al. 2015. Process tomography via sequential measurements on a single quantum system, Physical Review A, 92:032102, doi:10.1103/PhysRevA.92.032102.