Entanglement of mixed macroscopic superpositions: an entangling-power study

Details Entanglement of mixed macroscopic superpositions: an entangling-power study Entanglement of mixed macroscopic superpositions: an entangling-power study

2005-10-10

arxiv.org/abs/quant-ph/0510064v1

Phys. Rev. A 73, 012338 (2006)

Physics

Quantum Physics

9 pages, 7 figures, RevTeX4

Scientific paper

10.1103/PhysRevA.73.012338

We investigate entanglement properties of a recently introduced class of macroscopic quantum superpositions in two-mode mixed states. One of the tools we use in order to infer the entanglement in this non-Gaussian class of states is the power to entangle a qubit system. Our study reveals features which are hidden in a standard approach to entanglement investigation based on the uncertainty principle of the quadrature variables. We briefly describe the experimental setup corresponding to our theoretical scenario and a suitable modification of the protocol which makes our proposal realizable within the current experimental capabilities.

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