Vitagliano, Giuseppe; Apellaniz, Iagoba; Kleinmann, M.; Lücke, Bernd; Klempt, Carsten; Toth, Geza
(Bristol : Institute of Physics Publishing, 2017)
We present criteria to detect the depth of entanglement in macroscopic ensembles of spin-j particles using the variance and second moments of the collective spin components. The class of states detected goes beyond traditional ...