Quantum Characterization of a Werner-like Mixture

Details Quantum Characterization of a Werner-like Mixture Quantum Characterization of a Werner-like Mixture

2002-01-17

arxiv.org/abs/quant-ph/0201071v1

Phys. Rev. A 65, 062107 (2002).

Physics

Quantum Physics

8 pages ReVTeX, 8 eps figures

Scientific paper

10.1103/PhysRevA.65.062107

We introduce a Werner-like mixture [R. F. Werner, Phys. Rev. A {\bf 40}, 4277 (1989)] by considering two correlated but different degrees of freedom, one with discrete variables and the other with continuous variables. We evaluate the mixedness of this state, and its degree of entanglement establishing its usefulness for quantum information processing like quantum teleportation. Then, we provide its tomographic characterization. Finally, we show how such a mixture can be generated and measured in a trapped system like one electron in a Penning trap.

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