Spin-Orbit Mediated Control of Spin Qubits

Christian Flindt, Anders S. Sørensen, and Karsten Flensberg
Phys. Rev. Lett. 97, 240501 – Published 11 December 2006

Abstract

We propose to use the spin-orbit interaction as a means to control electron spins in quantum dots, enabling both single-qubit and two-qubit operations. Very fast single-qubit operations may be achieved by temporarily displacing the electrons. For two-qubit operations the coupling mechanism is based on a combination of the spin-orbit coupling and the mutual long-ranged Coulomb interaction. Compared to existing schemes using the exchange coupling, the spin-orbit induced coupling is less sensitive to random electrical fluctuations in the electrodes defining the quantum dots.

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  • Received 21 March 2006

DOI:https://doi.org/10.1103/PhysRevLett.97.240501

©2006 American Physical Society

Authors & Affiliations

Christian Flindt1,2, Anders S. Sørensen1, and Karsten Flensberg1

  • 1Niels Bohr Institute, Universitetsparken 5, DK-2100 Copenhagen, Denmark
  • 2MIC — Department of Micro and Nanotechnology, NanoDTU, Technical University of Denmark, Building 345east, DK-2800 Kongens Lyngby, Denmark

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Issue

Vol. 97, Iss. 24 — 15 December 2006

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