Permutationally invariant state reconstruction

  title={Permutationally invariant state reconstruction},
  author={Tobias Moroder and Philipp Hyllus and G{\'e}za T{\'o}th and Christian Schwemmer and Alexander Niggebaum and Stefanie Gaile and Otfried G{\"u}hne and Harald Weinfurter},
  journal={New Journal of Physics},
Feasible tomography schemes for large particle numbers must possess, besides an appropriate data acquisition protocol, an efficient way to reconstruct the density operator from the observed finite data set. Since state reconstruction typically requires the solution of a nonlinear large-scale optimization problem, this is a major challenge in the design of scalable tomography schemes. Here we present an efficient state reconstruction scheme for permutationally invariant quantum state tomography… 

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