Bichromatic Rabi Control of Semiconductor Qubits

Kavli Affiliate: Menno Veldhorst

| First 5 Authors: Valentin John, Francesco Borsoi, Zoltán György, Chien-An Wang, Gábor Széchenyi

| Summary:

Electrically driven spin resonance is a powerful technique for controlling
semiconductor spin qubits. However, it faces challenges in qubit addressability
and off-resonance driving in larger systems. We demonstrate coherent
bichromatic Rabi control of quantum dot hole spin qubits, offering a spatially
selective approach for large qubit arrays. By applying simultaneous microwave
bursts to different gate electrodes, we observe multichromatic resonance lines
and resonance anticrossings that are caused by the ac Stark shift. Our
theoretical framework aligns with experimental data, highlighting interdot
motion as the dominant mechanism for bichromatic driving.

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