Entanglement generation via a completely mixed nuclear spin bath

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We show that qubits coupled sequentially to a mesoscopic static completely mixed spin bath via the Heisenberg interaction can become highly entangled. Straightforward protocols for the generation of multipartite entangled (Greenberger-Horne-Zeilinger-)states are presented. We show the feasibility of an experimental realization in a quantum dot by the hyperfine interaction of an electron with the nuclear spins.
4+pages, 3 figures

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Mesoscale and Nanoscale Physics, Quantum Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/168941

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0710.4120
 http://arxiv.org/abs/0710.4120
 Phys. Rev. B 78, 125314 (2008)
 doi:10.1103/PhysRevB.78.125314

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arXiv