Iterative algorithm for reconstruction of entangled states
Jaroslav Řeháček, Z. Hradil, Miroslav Ježek · Physical Review A · 2001
An iterative algorithm for the reconstruction of an unknown quantum state from the results of incompatible measurements is proposed. It consists of an expectation-maximization step followed by a unitary transformation of the eigenbasis of the density matrix. The procedure has been applied to the reconstruction of the entangled pair of photons.