%0 Journal Article
%A Sanchidrian-Vaca, Carlos
%A Luis Aina, Alfredo
%T Entanglement between total intensity and polarization for pairs of coherent states
%D 2018
%@ 2469-9926
%U https://hdl.handle.net/20.500.14352/12084
%X We examine entanglement between number and polarization, or number and relative phase, in pair coherent states and two-mode squeezed vacuum via linear entropy and covariance criteria. We consider the embedding of the two-mode Hilbert space in a larger space to get a well-defined factorization of the number-phase variables. This can be regarded as a kind of protoentanglement that can be extracted and converted into real particle entanglement via feasible experimental procedures. In particular this reveals interesting entanglement properties of pairs of coherent states.
%~