Tensorial characterization and quantum estimation of weakly entangled qubits

Article: 
Tensorial characterization and quantum estimation of weakly entangled qubits
Authors: 
P. Aniello, J. Clemente-Gallardo, G. Marmo, G. F. Volkert
Journal: 
Preprint-arXiv
Year: 
2012
URL: 
arXiv:1202.3070v1