Abstract
An algorithm for quantum-state estimation based on the maximum-likelihood estimation is proposed. Existing techniques for state reconstruction based on the inversion of measured data are shown to be overestimated since they do not guarantee the positive definiteness of the reconstructed density matrix.
- Received 11 September 1996
DOI:https://doi.org/10.1103/PhysRevA.55.R1561
©1997 American Physical Society
