Phys. Rev. A 55, R1561–R1564 (1997)Quantum-state estimation
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. © 1997 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.55.R1561
DOI:
10.1103/PhysRevA.55.R1561
PACS:
03.65.Bz, 02.50.Wp, 42.50.Dv
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