Hyperfine-mediated gate-driven electron spin resonance

Abstract

An all-electrical spin resonance effect in a GaAs few-electron double quantum dot is investigated experimentally and theoretically. The magnetic field dependence and absence of associated Rabi oscillations are consistent with a novel hyperfine mechanism. The resonant frequency is sensitive to the instantaneous hyperfine effective field, and the effect can be used to detect and create sizable nuclear polarizations. A device incorporating a micromagnet exhibits a magnetic field difference between dots, allowing electrons in either dot to be addressed selectively.

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References in corpus (4)

• Single-shot read-out of an individual electron spin in a quantum dot
• Driven coherent oscillations of a single electron spin in a quantum dot
• Zeeman energy and spin relaxation in a one-electron quantum dot
• Large nuclear Overhauser fields detected in vertically-coupled double quantum dots

Cited by in corpus (12)

• Electrically driven single electron spin resonance in a slanting Zeeman field
• Dynamic Nuclear Polarization with Single Electron Spins
• Nuclear Spins in Nanostructures
• Theory of electric dipole spin resonance in quantum dots: Mean field theory with Gaussian fluctuations and beyond
• Weak values of electron spin in a double quantum dot
• Electrically-Driven Reverse Overhauser Pumping of Nuclear Spins in Quantum Dots
• Nuclear Tuning and Detuning of the Electron Spin Resonance in a Quantum Dot
• Fine structure and optical pumping of spins in individual semiconductor quantum dots
• Coherent spin rotations in open driven double quantum dots
• Electron spin manipulation and resonator readout in a double quantum dot nano-electromechanical system
• Electric-Field-Induced Nuclear Spin Resonance Mediated by Oscillating Electron Spin Domains in GaAs-Based Semiconductors
• Theory of spin qubits in nanostructures