Design and control of spin gates in two quantum dots arrays

Details Design and control of spin gates in two quantum dots arrays Design and control of spin gates in two quantum dots arrays

2005-06-16

arxiv.org/abs/cond-mat/0506414v1

Appl. Phys. Lett. 88, 103103 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

10.1063/1.2181275

We study the spin-spin interaction between quantum dots coupled through a two dimensional electron gas with spin-orbit interaction. We show that the interplay between transverse electron focusing and spin-orbit coupling allows to dynamically change the symmetry of the effective spin-spin Hamiltonian. That is, the interaction can be changed from Ising-like to Heisenberg-like and vice versa. The sign and magnitude of the coupling constant can also be tuned.

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