3 papers
math-ph2013
Global convergence of diluted iterations in maximum-likelihood quantum tomography
D. S. Gonçalves, M. A. Gomes-Ruggiero, C. Lavor
In this paper we present an inexact stepsize selection for the Diluted RρR algorithm, used to obtain the maximum likelihood estimate to the density matrix in quantum state tomograp…
quant-ph2013
Quantum State Tomography with incomplete data: Maximum Entropy and Variational Quantum Tomography
D. S. Gonçalves, C. Lavor, M. A. Gomes-Ruggiero +3
Whenever we do not have an informationally complete set of measurements, the estimate of a quantum state can not be uniquely determined. In this case, among the density matrices co…
quant-ph2011
Local solutions of Maximum Likelihood Estimation in Quantum State Tomography
Douglas S. Gonçalves, Márcia A. Gomes-Ruggiero, Carlile Lavor +2
Maximum likelihood estimation is one of the most used methods in quantum state tomography, where the aim is to reconstruct the density matrix of a physical system from measurement…