Ultrastrong coupling in two-resonator circuit QED
Artikel i vetenskaplig tidskrift, 2016

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.

Författare

A. Baust

Walther-Meissner-Institut

Technische Universität München

Nanosystems Initiative Munich (NIM)

E. Hoffmann

Walther-Meissner-Institut

Technische Universität München

M. Haeberlein

Walther-Meissner-Institut

Technische Universität München

M. J. Schwarz

Walther-Meissner-Institut

Nanosystems Initiative Munich (NIM)

Technische Universität München

P. Eder

Nanosystems Initiative Munich (NIM)

Walther-Meissner-Institut

Technische Universität München

J. Goetz

Walther-Meissner-Institut

Technische Universität München

F. Wulschner

Walther-Meissner-Institut

Technische Universität München

E. Xie

Walther-Meissner-Institut

Technische Universität München

L. Zhong

Nanosystems Initiative Munich (NIM)

Walther-Meissner-Institut

Technische Universität München

Isaac Fernando Quijandria Diaz

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

D. Zueco

Fundación ARAID

Universidad de Zaragoza

J. J. G. Ripoll

CSIC - Instituto de Fisica Fundamental (IFF)

L. Garcia-Alvarez

Universidad del Pais Vasco/ Euskal Herriko Unibertsitatea

G. Romero

Universidad de Santiago de Chile

Universidad del Pais Vasco/ Euskal Herriko Unibertsitatea

E. Solano

Universidad del Pais Vasco/ Euskal Herriko Unibertsitatea

Basque Foundation for Science (Ikerbasque)

K. G. Fedorov

Technische Universität München

Walther-Meissner-Institut

E. P. Menzel

Walther-Meissner-Institut

Technische Universität München

F. Deppe

Nanosystems Initiative Munich (NIM)

Walther-Meissner-Institut

Technische Universität München

A. Marx

Walther-Meissner-Institut

R. Gross

Technische Universität München

Walther-Meissner-Institut

Nanosystems Initiative Munich (NIM)

Physical Review B

24699950 (ISSN) 24699969 (eISSN)

Vol. 93 21 Art. no. 214501- 214501

Scalable Superconducting Processors for Entangled Quantum Information Technology (ScaleQIT)

Europeiska kommissionen (FP7), 2013-02-01 -- 2016-01-31.

Quantum Propagating Microwaves in Strongly Coupled Environments (PROMISCE)

Europeiska kommissionen (FP7), 2012-04-01 -- 2015-03-31.

Ämneskategorier

Atom- och molekylfysik och optik

DOI

10.1103/PhysRevB.93.214501

Mer information

Senast uppdaterat

2018-11-22