Ultrastrong coupling in two-resonator circuit QED
| Autor: | J.-J. Garcia Ripoll, M. Haeberlein, M. J. Schwarz, Achim Marx, Frank Deppe, Edwin P. Menzel, Rudolf Gross, A. Baust, L. Zhong, David Zueco, P. Eder, Enrique Solano, Guillermo Romero, Jan Goetz, Fernando Quijandría, E. Hoffmann, L. García-Álvarez, E. Xie, F. Wulschner, Kirill G. Fedorov |
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| Přispěvatelé: | Ministerio de Economía y Competitividad (España), Comunidad de Madrid, Eusko Jaurlaritza, Fondo Nacional de Desarrollo Científico y Tecnológico (Chile), European Commission, German Research Foundation, European Research Council |
| Rok vydání: | 2016 |
| Předmět: |
Josephson effect
Flux qubit Charge qubit Atom and Molecular Physics and Optics FOS: Physical sciences ComputingMilieux_LEGALASPECTSOFCOMPUTING 02 engineering and technology 01 natural sciences Phase qubit Resonator Circuit quantum electrodynamics Condensed Matter::Superconductivity 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 010306 general physics ComputingMilieux_MISCELLANEOUS Coupling Physics Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics 021001 nanoscience & nanotechnology Data_GENERAL Qubit Quantum electrodynamics Atomic physics 0210 nano-technology Quantum Physics (quant-ph) |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname Zaguán. Repositorio Digital de la Universidad de Zaragoza Physical Review B (24699950) vol.93(2016) |
| Popis: | Under the terms of the Creative Commons Attribution license.-- et al. 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. ©2016 American Physical Society Thiswork is supported by the German Research Foundation through SFB 631 and FE 1564/1-1; Spanish MINECO FIS2012-36673-03-02, MAT2014-53432-C5-1-R, FIS2014- 55867-P and FIS2012-33022; CAM Research Network QUITEMAD+; UPV/EHU UFI 11/55, UPV/EHU PhD Grant, and Basque Government IT472-10; the Fondo Nacional de Desarrollo Cientifico y Tecnológico (FONDECYT, Chile) under Grant 1150653; the EU projects CCQED, PROMISCE, and SCALEQIT. We further acknowledge GEFENOL. |
| Databáze: | OpenAIRE |
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