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Article overview
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Two-Impurity Kondo Model: Spin-Orbit Interactions and Entanglement | Henrik Johannesson
; David F. Mross
; Erik Eriksson
; | Date: |
8 Aug 2011 | Abstract: | Motivated by proposals to employ RKKY-coupled spins as building blocks in a
solid-state quantum computer, we analyze how the RKKY interaction in a 2D
electron gas is influenced by spin-orbit interactions. Using a two-impurity
Kondo model with added Dresselhaus and Rashba spin-orbit interactions we find
that spin-rotational invariance of the RKKY interaction - essential for having
a well-controllable two-qubit gate - is restored when tuning the Rashba
coupling to have the same strength as the Dresselhaus coupling. We also discuss
the critical properties of the two-impurity Kondo model in the presence of
spin-orbit interactions, and extract the leading correction to the block
entanglement scaling due to these interactions. | Source: | arXiv, 1108.1817 | Services: | Forum | Review | PDF | Favorites |
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