Field Tuning the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>g</mml:mi></mml:math>Factor in InAs Nanowire Double Quantum Dots

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.