%0 Journal Article %A Muñoz, A. %A Klimov, Andrei B. %A Grassl, M. %A Sánchez Soto, Luis Lorenzo %T Tomography from collective measurements %D 2018 %@ 1570-0755 %U https://hdl.handle.net/20.500.14352/12292 %X 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. For the fully symmetric sector, the reconstruction protocol can be reduced to projections onto a canonically chosen set of pure states. %~