Schroedinger-Cat Entangled State Reconstruction in the Penning Trap
  We present a tomographic method for the reconstruction of the full entangled quantum state for the cyclotron and spin degrees of freedom of an electron in a Penning trap. Numerical simulations of the reconstruction of several significant quantum states show that the method turns out to be quite accurate. 
Michol Massini, Mauro Fortunato, Stefano Mancini, Paolo Tombesi, and   David Vitali (INFM and University of Camerino, Italy)