Bichromatic Rabi Control of Semiconductor Qubits

John, Valentin and Borsoi, Francesco and Györgyi, Zoltán and Wang, Chien-An and Széchenyi, Gábor and Van Riggelen-Doelman, Floor and Lawrie, William I. L. and Hendrickx, Nico W. and Sammak, Amir and Scappucci, Giordano and Pályi, András and Veldhorst, Menno (2024) Bichromatic Rabi Control of Semiconductor Qubits. PHYSICAL REVIEW LETTERS, 132 (6). No.-067001. ISSN 0031-9007

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Abstract

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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