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Field Tuning the g Factor in InAs Nanowire Double Quantum Dots

2011; American Physical Society; Volume: 107; Issue: 17 Linguagem: Inglês

10.1103/physrevlett.107.176811

1092-0145

M. D. Schroer, K. D. Petersson, Minkyung Jung, J. R. Petta,

Semiconductor Quantum Structures and Devices

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.