Bichromatic Rabi Control of Semiconductor Qubits.

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.

Citation

Valentin John, Francesco Borsoi, Zoltán György, Chien-An Wang, Gábor Széchenyi, Floor van Riggelen-Doelman, William I L Lawrie, Nico W Hendrickx, Amir Sammak, Giordano Scappucci, András Pályi, Menno Veldhorst. Bichromatic Rabi Control of Semiconductor Qubits. Physical review letters. 2024 Feb 09;132(6):067001

PMID: 38394602

search → result