%0 Journal Article
%J ArXiv e-prints
%D 2011
%T A continuous-variable formalism for the Faraday atom-light interface
%A Stasińska, J.
%A Paganelli, Simone
%A Rodó, C.
%A Sanpera, A.
%X Quantum interfaces between polarized atomic ensembles and coherent states of light, applied recently to manipulate bipartite and multipartite entanglement, are revisited by means of a continuous-variable formalism. The explicit use of the continuous-variable formalism facilitates significantly the analysis of entanglement between different modes, reducing it to the study of the properties of a final covariance matrix which can be found analytically. Furthermore, it allows to study matter-light interfaces for mixed states, adapting the formalism to the experimental situations in which the initial prepared Gaussian states are, unavoidably, affected by a certain amount of noise. A multipartite scenario, leading to the generation of macroscopic cluster states is presented and analyzed in detail within this formalism.
%B ArXiv e-prints
%G eng
%U http://arxiv.org/abs/1007.0403