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Autor Grassl, M. |
Documentos disponibles escritos por este autor (3)
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Di Matteo, Olivia ; Sánchez Soto, Luis Lorenzo ; Leuchs, G. ; Grassl, M. | Amer Physical Soc | 2017-02-28We develop a systematic coarse-graining procedure for systems of N qubits. We exploit the underlying geometrical structures of the associated discrete phase space to produce a coarse-grained version with reduced effective size. Our coarse-graine[...]texto impreso
Björk, G. ; Klimov, A. B. ; Hoz Iglesias, Pablo de la ; Grassl, M. ; Leuchs, G. ; Sánchez Soto, Luis Lorenzo | American Physical Society | 2015-09-01The characterization of quantum polarization of light requires knowledge of all the moments of the Stokes variables, which are appropriately encoded in the multipole expansion of the density matrix. We look into the cumulative distribution of th[...]texto impreso
We discuss the tomography of N-qubit states using collective measurements. The method is exact for symmetric states, whereas for not completely symmetric states the information accessible can be arranged as a mixture of irreducible SU(2) blocks.[...]