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Effective spin Hamiltonian of a gated triple quantum dot in the presence of spin-orbit interaction.
J Phys Condens Matter ; 29(40): 405302, 2017 Oct 11.
Artigo em Inglês | MEDLINE | ID: mdl-28703716
We derive and study the effective spin Hamiltonian of a gated triple quantum dot that includes the effects of spin-orbit interaction and an external magnetic field. In the analysis of the resulting spin interaction in linear and in general triangular geometry of the dots, we show that the pairwise spin interaction does depend on the position of the third dot. The spin-orbit induced anisotropy, in addition to changing its strength, also changes its symmetry with the motion of the third quantum dot outside the linear arrangement. Our results present a simplified model that may be used in the design of quantum computers based on three-spin qubits.





Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Idioma: Inglês Revista: J Phys Condens Matter Assunto da revista: Biofísica Ano de publicação: 2017 Tipo de documento: Artigo