Generation and detection of a spin entanglement in nonequilibrium quantum dots

Details Generation and detection of a spin entanglement in nonequilibrium quantum dots Generation and detection of a spin entanglement in nonequilibrium quantum dots

2007-12-18

arxiv.org/abs/0712.3016v2

New. J. Phys. 10 (2008) 045016

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 3 figures

Scientific paper

10.1088/1367-2630/10/4/045016

Spin entanglement between two spatially separated electrons can be generated in nonequilibrium interacting quantum dots, coherently coupled to a common lead. In this system entangled two-electron states develop which are Werner states with an imbalance between singlet and triplet probabilities. We propose a multi-terminal, multiply-connected setup for the generation and detection of this imbalance. In particular, we identify a regime in which the formation of spin entanglement leads to a cancellation of Aharonov-Bohm oscillations.

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