Ultrastrong coupling in two-resonator circuit QED

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MARC

Baust, A.Technische Universität München (TUM),Technical University of Munich (TUM),Nanosystems Initiative Munich (NIM) (author)

Ultrastrong coupling in two-resonator circuit QED

Article/chapterEnglish2016

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2016
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LIBRIS-ID:oai:research.chalmers.se:e6d6e14c-aafb-411e-9c28-634254a67f18
https://research.chalmers.se/publication/239046URI
https://doi.org/10.1103/PhysRevB.93.214501DOI

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Language:English
Summary in:English

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We report on ultrastrong coupling between a superconducting flux qubit and a resonant mode of a system comprised of two superconducting coplanar stripline resonators coupled galvanically to the qubit. With a coupling strength as high as 17.5% of the mode frequency, exceeding that of previous circuit quantum electrodynamics experiments, we observe a pronounced Bloch-Siegert shift. The spectroscopic response of our multimode system reveals a clear breakdown of the Jaynes-Cummings approximation. In contrast to earlier experiments, the high coupling strength is achieved without making use of an additional inductance provided by a Josephson junction.

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Hoffmann, E.Technische Universität München (TUM),Technical University of Munich (TUM) (author)
Haeberlein, M.Technische Universität München (TUM),Technical University of Munich (TUM) (author)
Schwarz, M. J.Nanosystems Initiative Munich (NIM),Technische Universität München (TUM),Technical University of Munich (TUM) (author)
Eder, P.Nanosystems Initiative Munich (NIM),Technische Universität München (TUM),Technical University of Munich (TUM) (author)
Goetz, J.Technische Universität München (TUM),Technical University of Munich (TUM) (author)
Wulschner, F.Technische Universität München (TUM),Technical University of Munich (TUM) (author)
Xie, E.Technische Universität München (TUM),Technical University of Munich (TUM) (author)
Zhong, L.Nanosystems Initiative Munich (NIM),Technische Universität München (TUM),Technical University of Munich (TUM) (author)
Quijandria Diaz, Isaac Fernando,1982Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)isaacf (author)
Zueco, D.Fundación ARAID,Universidad de Zaragoza,University of Zaragoza (author)
Ripoll, J. J. G.CSIC - Instituto de Fisica Fundamental (IFF) (author)
Garcia-Alvarez, L.Universidad del Pais Vasco / Euskal Herriko Unibertsitatea,University of the Basque Country (UPV/EHU) (author)
Romero, G.Universidad de Santiago de Chile,University of Santiago, Chile,Universidad del Pais Vasco / Euskal Herriko Unibertsitatea,University of the Basque Country (UPV/EHU) (author)
Solano, E.Universidad del Pais Vasco / Euskal Herriko Unibertsitatea,University of the Basque Country (UPV/EHU),Basque Foundation for Science (Ikerbasque) (author)
Fedorov, K. G.Technische Universität München (TUM),Technical University of Munich (TUM) (author)
Menzel, E. P.Technische Universität München (TUM),Technical University of Munich (TUM) (author)
Deppe, F.Nanosystems Initiative Munich (NIM),Technische Universität München (TUM),Technical University of Munich (TUM) (author)
Marx, A. (author)
Gross, R.Technische Universität München (TUM),Technical University of Munich (TUM),Nanosystems Initiative Munich (NIM) (author)
Technische Universität München (TUM)Nanosystems Initiative Munich (NIM) (creator_code:org_t)

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In:Physical Review B93:21, s. Art. no. 214501-2469-99692469-9950

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By the author/editor: Baust, A.; Hoffmann, E.; Haeberlein, M.; Schwarz, M. J.; Eder, P.; Goetz, J.; show more...; Wulschner, F.; Xie, E.; Zhong, L.; Quijandria Diaz, ...; Zueco, D.; Ripoll, J. J. G.; Garcia-Alvarez, ...; Romero, G.; Solano, E.; Fedorov, K. G.; Menzel, E. P.; Deppe, F.; Marx, A.; Gross, R.; show less...

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