Publikation: Floquet Spectroscopy of a Strongly Driven Quantum Dot Charge Qubit with a Microwave Resonator
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2018
Autor:innen
Koski, Jonne V.
Landig, Andreas J.
Scarlino, Pasquale
Reichl, Christian
Wegscheider, Werner
Wallraff, Andreas
Ensslin, Klaus
Ihn, Thomas
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Physical Review Letters. 2018, 121(4), 043603. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.121.043603
Zusammenfassung
We experimentally investigate a strongly driven GaAs double quantum dot charge qubit weakly coupled to a superconducting microwave resonator. The Floquet states emerging from strong driving are probed by tracing the qubit-resonator resonance condition. In this way, we probe the resonance of a qubit that is driven in an adiabatic, a nonadiabatic, or an intermediate rate, showing distinct quantum features of multiphoton processes and a fringe pattern similar to Landau-Zener-Stückelberg interference. Our resonant detection scheme enables the investigation of novel features when the drive frequency is comparable to the resonator frequency. Models based on the adiabatic approximation, rotating wave approximation, and Floquet theory explain our experimental observations.
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KOSKI, Jonne V., Andreas J. LANDIG, András PÁLYI, Pasquale SCARLINO, Christian REICHL, Werner WEGSCHEIDER, Guido BURKARD, Andreas WALLRAFF, Klaus ENSSLIN, Thomas IHN, 2018. Floquet Spectroscopy of a Strongly Driven Quantum Dot Charge Qubit with a Microwave Resonator. In: Physical Review Letters. 2018, 121(4), 043603. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.121.043603BibTex
@article{Koski2018Floqu-43226,
year={2018},
doi={10.1103/PhysRevLett.121.043603},
title={Floquet Spectroscopy of a Strongly Driven Quantum Dot Charge Qubit with a Microwave Resonator},
number={4},
volume={121},
issn={0031-9007},
journal={Physical Review Letters},
author={Koski, Jonne V. and Landig, Andreas J. and Pályi, András and Scarlino, Pasquale and Reichl, Christian and Wegscheider, Werner and Burkard, Guido and Wallraff, Andreas and Ensslin, Klaus and Ihn, Thomas},
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<dcterms:abstract xml:lang="eng">We experimentally investigate a strongly driven GaAs double quantum dot charge qubit weakly coupled to a superconducting microwave resonator. The Floquet states emerging from strong driving are probed by tracing the qubit-resonator resonance condition. In this way, we probe the resonance of a qubit that is driven in an adiabatic, a nonadiabatic, or an intermediate rate, showing distinct quantum features of multiphoton processes and a fringe pattern similar to Landau-Zener-Stückelberg interference. Our resonant detection scheme enables the investigation of novel features when the drive frequency is comparable to the resonator frequency. Models based on the adiabatic approximation, rotating wave approximation, and Floquet theory explain our experimental observations.</dcterms:abstract>
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