Current induced entanglement of nuclear spins in quantum dots

Details Current induced entanglement of nuclear spins in quantum dots Current induced entanglement of nuclear spins in quantum dots

2002-10-10

arxiv.org/abs/cond-mat/0210231v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 2 figures

Scientific paper

We propose an entanglement mechanism of nuclear spins in quantum dots driven by the electric current. The current accompanied by the spin flip in quantum dots gradually increases components of larger total spin of nuclei. This entangled state drastically enhances the spin relaxation rate of electrons, which can be detected by measuring a leakage current in the spin-blockade region. This mechanism is not relevant in optical experiments which examine the spin relaxation of single excitations.

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