Theory of Anisotropic Exchange in Laterally Coupled Quantum Dots

Baruffa, Fabio and Stano, Peter and Fabian, Jaroslav (2010) Theory of Anisotropic Exchange in Laterally Coupled Quantum Dots. PHYSICAL REVIEW LETTERS, 104 (12): 126401. ISSN 0031-9007,

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Abstract

The effects of spin-orbit coupling on the two-electron spectra in lateral coupled quantum dots are investigated analytically and numerically. It is demonstrated that in the absence of magnetic field, the exchange interaction is practically unaffected by spin-orbit coupling, for any interdot coupling, boosting prospects for spin-based quantum computing. The anisotropic exchange appears at finite magnetic fields. A numerically accurate effective spin Hamiltonian for modeling spin-orbit-induced two-electron spin dynamics in the presence of magnetic field is proposed.

Item Type: Article
Uncontrolled Keywords: ELECTRON-SPIN;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian
Depositing User: Dr. Gernot Deinzer
Date Deposited: 03 Aug 2020 10:27
Last Modified: 03 Aug 2020 10:27
URI: https://pred.uni-regensburg.de/id/eprint/24960

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