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Landau-Zener-Stuckelberg interferometry of a single electron charge qubit

Author(s): Stehlik, J; Dovzhenko, Y; Petta, Jason R; Johansson, JR; Nori, F; et al

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Abstract: We perform Landau-Zener-Stuckelberg interferometry on a single electron GaAs charge qubit by repeatedly driving the system through an avoided crossing. We observe coherent destruction of tunneling, where periodic driving with specific amplitudes inhibits current flow. We probe the quantum dot occupation using a charge detector, observing oscillations in the qubit population resulting from the microwave driving. At a frequency of 9 GHz we observe excitation processes driven by the absorption of up to 17 photons. Simulations of the qubit occupancy are in good agreement with the experimental data.
Publication Date: 15-Sep-2012
Electronic Publication Date: 17-Sep-2012
Citation: Stehlik, J, Dovzhenko, Y, Petta, JR, Johansson, JR, Nori, F, Lu, H, Gossard, AC. (2012). Landau-Zener-Stuckelberg interferometry of a single electron charge qubit. PHYSICAL REVIEW B, 86 (10.1103/PhysRevB.86.121303
DOI: doi:10.1103/PhysRevB.86.121303
ISSN: 1098-0121
Type of Material: Journal Article
Journal/Proceeding Title: PHYSICAL REVIEW B
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.

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