Quantum entanglement of space domains occupied by interacting electrons

Details Quantum entanglement of space domains occupied by interacting electrons Quantum entanglement of space domains occupied by interacting electrons

2008-10-16

arxiv.org/abs/0810.2935v1

Phys. Status Solidi B 246, 1006 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1002/pssb.200881570

Spin-entanglement of two electrons occupying two spatial regions -- domains -- is expressed in a compact form in terms of spin-spin correlation functions. The power of the formalism is demonstrated on several examples ranging from generation of entanglement by scattering of two electrons to the entanglement of a pair of qubits represented by a double quantum dot coupled to leads. In the latter case the collapse of entanglement due to the Kondo effect is analyzed.

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