Electrically driven spin resonance with bichromatic driving

TL;DR

This paper theoretically investigates a frequency-mixing variant of electrically driven spin resonance (EDSR) using bichromatic driving, enabling simultaneous single-qubit gates in spin qubit architectures.

Contribution

It introduces a novel bichromatic EDSR scheme and analyzes its parameter dependence, expanding control options for spin qubits.

Findings

Calculated Rabi frequency dependence on parameters

Analyzed Bloch-Siegert shift effects

Proposed benefits for shared-control qubit architectures

Abstract

Electrically driven spin resonance (EDSR) is an established tool for controlling semiconductor spin qubits. Here, we theoretically study a frequency-mixing variant of EDSR, where two driving tones with different drive frequencies are applied, and the resonance condition connects the spin Larmor frequency with the sum of the two drive frequencies. Focusing on flopping-mode operation, we calculate the parameter dependence of the Rabi frequency and the Bloch-Siegert shift. A shared-control spin qubit architecture could benefit from this bichromatic EDSR scheme, as it enables simultaneous single-qubit gates.