Spin-Orbit Mediated Control of Spin Qubits

Details Spin-Orbit Mediated Control of Spin Qubits Spin-Orbit Mediated Control of Spin Qubits

2006-03-21

arxiv.org/abs/cond-mat/0603559v2

Phys. Rev. Lett. 97, 240501 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures; minor changes - final version as published in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.97.240501

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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