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Phys Rev Lett. 2011 Oct 21;107(17):176811. Epub 2011 Oct 19.

Field tuning the g factor in InAs nanowire double quantum dots.

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1
Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.

Abstract

We study the effects of magnetic and electric fields on the g factors of spins confined in a two-electron InAs nanowire double quantum dot. Spin sensitive measurements are performed by monitoring the leakage current in the Pauli blockade regime. Rotations of single spins are driven using electric-dipole spin resonance. The g factors are extracted from the spin resonance condition as a function of the magnetic field direction, allowing determination of the full g tensor. Electric and magnetic field tuning can be used to maximize the g-factor difference and in some cases altogether quench the electric-dipole spin resonance response, allowing selective single spin control.

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