Single-photon-driven high-order sideband transitions in an ultrastrongly coupled circuit-quantum-electrodynamics system

Zhen Chen, Yimin Wang, Tiefu Li, Lin Tian, Yueyin Qiu, Kunihiro Inomata, Fumiki Yoshihara, Siyuan Han, Franco Nori, J. S. Tsai, and J. Q. You
Phys. Rev. A 96, 012325 – Published 19 July 2017

Abstract

We report the experimental observation of high-order sideband transitions at the single-photon level in a quantum circuit system of a flux qubit ultrastrongly coupled to a coplanar waveguide resonator. With the coupling strength reaching 10% of the resonator's fundamental frequency, we obtain clear signatures of higher order red-sideband and first-order blue-sideband transitions, which are mainly due to the ultrastrong Rabi coupling. Our observation advances the understanding of ultrastrongly coupled systems and paves the way to study high-order processes in the quantum Rabi model at the single-photon level.

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  • Received 20 April 2016
  • Revised 2 September 2016

DOI:https://doi.org/10.1103/PhysRevA.96.012325

©2017 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & TechnologyAtomic, Molecular & Optical

Authors & Affiliations

Zhen Chen1, Yimin Wang1, Tiefu Li2,*, Lin Tian3,†, Yueyin Qiu1, Kunihiro Inomata4, Fumiki Yoshihara4,‡, Siyuan Han5, Franco Nori4,6, J. S. Tsai4,7, and J. Q. You1,§

  • 1Quantum Physics and Quantum Information Division, Beijing Computational Science Research Center, Beijing 100193, China
  • 2Institute of Microelectronics, Department of Microelectronics and Nanoelectronics and Tsinghua National Laboratory of Information Science and Technology, Tsinghua University, Beijing 100084, China
  • 3School of Natural Sciences, University of California, Merced, California 95343, USA
  • 4RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
  • 5Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, USA
  • 6Physics Department, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
  • 7Department of Physics, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan

  • *litf@tsinghua.edu.cn
  • ltian@ucmerced.edu
  • Present address: National Institute of Information and Communications Technology, 4-2-1, Nukuikitamachi, Koganei, Tokyo 184-8795, Japan.
  • §jqyou@csrc.ac.cn

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Issue

Vol. 96, Iss. 1 — July 2017

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