A Note on the Disentanglement of Gaussian Quantum States by Symplectic Rotations

Abstract

We show that every Gaussian mixed quantum state can be disentangled by conjugation with a metaplectic operator associated with a symplectic rotation. The main tools we use are the Werner-Wolf condition on covariance matrices and the symplectic covariance of Weyl quantization.

To appear in CR. Acad. Sci. Paris (in print)

References in corpus (3)

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• Mixed Quantum States with Variable Planck Constant