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| Título: | Circuit quantum electrodynamics in the ultrastrong-coupling regime |
Autor: | García-Ripoll, Juan José CSIC ORCID ; Zueco, David CSIC ORCID; Solano, Enrique | Fecha de publicación: | 2010 | Editor: | Nature Publishing Group | Citación: | Nature Physics 6: 772-776 (2010) | Resumen: | In circuit quantum electrodynamics (QED), where superconducting artificial atoms are coupled to on-chip cavities, the exploration of fundamental quantum physics in the strong-coupling regime has greatly evolved. In this regime, an atom and a cavity can exchange a photon frequently before coherence is lost. Nevertheless, all experiments so far are well described by the renowned Jaynes-Cummings model. Here, we report on the first experimental realization of a circuit QED system operating in the ultrastrong-coupling limit, where the atom-cavity coupling rate g reaches a considerable fraction of the cavity transition frequency ‰r. Furthermore, we present direct evidence for the breakdown of the Jaynes-Cummings model. We reach remarkable normalized coupling rates g/ ‰r of up to 12% by enhancing the inductive coupling of a flux qubit to a transmission line resonator. Our circuit extends the toolbox of quantum optics on a chip towards exciting explorations of ultrastrong light-matter interaction. © 2010 Macmillan Publishers Limited. All rights reserved. | Descripción: | El pdf del artículo es la versión pre-print: arxiv:1003.2376.-- et al. | Versión del editor: | http://dx.doi.org/10.1038/nphys1730 | URI: | http://hdl.handle.net/10261/52504 | DOI: | 10.1038/nphys1730 | Identificadores: | doi: 10.1038/nphys1730 issn: 1745-2473 e-issn: 1745-2481 |
| Aparece en las colecciones: | (ICMA) Artículos (CFMAC-IFF) Artículos |
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| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| Circuit quantum-arXiv-10032376v1.pdf | 4,07 MB | Adobe PDF |  Visualizar/Abrir |
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