We suggest a scheme to reconstruct the covariance matrix of continuous variable twomode states using a single homodyne detector and a few polarization elements. Our method can be used to fully characterize the bipartite Gaussian entangled states obtained at the output of a (nondegenerate) optical parametric amplifier driven below threshold, as well as to extract relevant informations on generic bipartite states made of two frequency degenerate but orthogonally polarized modes.
Homodyne characterization of continuous variable bipartite states / A. Porzio, V. D'Auria, S. Solimeno, S. Olivares, M. G. A. Paris. - In: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION. - ISSN 0219-7499. - 5:1-2(2007), pp. 63-68.
Homodyne characterization of continuous variable bipartite states
S. OlivaresPenultimo
;M. G. A. ParisUltimo
2007
Abstract
We suggest a scheme to reconstruct the covariance matrix of continuous variable twomode states using a single homodyne detector and a few polarization elements. Our method can be used to fully characterize the bipartite Gaussian entangled states obtained at the output of a (nondegenerate) optical parametric amplifier driven below threshold, as well as to extract relevant informations on generic bipartite states made of two frequency degenerate but orthogonally polarized modes.
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