Impurity Scattering Induced Entanglement of Ballistic Electrons

Details Impurity Scattering Induced Entanglement of Ballistic Electrons Impurity Scattering Induced Entanglement of Ballistic Electrons

2001-09-10

arxiv.org/abs/quant-ph/0109045v2

Physics

Quantum Physics

To appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.87.277901

We show how entanglement between two conduction electrons is generated in the presence of a localized magnetic impurity embedded in an otherwise ballistic conductor of special geometry. This process is a generalization of beam-splitter mediated entanglement generation schemes with a localized spin placed at the site of the beam splitter. Our entangling scheme is unconditional and robust to randomness of the initial state of the impurity. The entangled state generated manifests itself in noise reduction of spin-dependent currents.

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