Bichromatic Rabi Control of Semiconductor Qubits

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

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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.

Original languageEnglish
Article number067001
Number of pages7
JournalPhysical review letters
Volume132
Issue number6
DOIs
Publication statusPublished - 2024

Funding

We are grateful to Maximilian Rimbach-Russ, Brennan Undseth, and all the members of the Veldhorst laboratory for fruitful discussions. We acknowledge support by the Dutch Research Council through an NWO ENW grant and the European Union for an ERC Starting Grant. F. B. acknowledges support from the Dutch Research Council (NWO) via the National Growth Fund program Quantum Delta NL (Grant No. NGF.1582.22.001). This research was supported by the Ministry of Culture and Innovation and the National Research, Development and Innovation Office (NKFIH) within the Quantum Information National Laboratory of Hungary (Grant No. 2022-2.1.1-NL-2022-00004), by the ÚNKP-22-1 New National Excellence Program of the Ministry for Culture and Innovation from the source of the National Research Development and Innovation Fund, by NKFIH through the OTKA Grant No. FK 132146, by the János Bolyai Research Scholarship of the Hungarian Academy of Sciences, and by the European Union through the Horizon Europe project IGNITE and QLSI.

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