Cooperative effects for qubits in a semi-infinite one-dimensional transmission line

ORAL

Abstract

In a one-dimensional (1D) transmission line, it is possible to achieve nearly ideal spatial mode-matching for a microwave field. Taking advantage of this, experiments have demonstrated strong interaction between resonant propagating microwave photons and superconducting qubits in such a system. When the system contains more than one qubit, photon-mediated interactions between the qubits gives rise to many interesting phenomena. In this work, we embedded two transmon qubits, separated by wavelength distances, in a 1D transmission line terminated by a mirror. By tuning the qubits into resonance, we observe collective effects. In particular, both the relaxation rates and the Lamb shifts of the qubits are modified as a function of the inter-qubit and qubit-mirror distances.

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Presenters

  • Ping Yi Wen

    • Department of Physics, National Tsing Hua University, Taiwan
    • Department of Physics, National Tsing Hua University

Authors

  • Ping Yi Wen

    • Department of Physics, National Tsing Hua University, Taiwan
    • Department of Physics, National Tsing Hua University

  • Baladitya Suri

    • Indian Institute of Science
    • Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology

  • Anton Frisk Kockum

    • Department of Microtechnology and Nanoscience, Chalmers University of Technology, Sweden
    • Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology
    • Chalmers University of Technology

  • Hou Ian

    • Institute of Applied Physics and Materials Engineering, University of Macau, Macau
    • Institute of Applied Physics and Materials Eng., University of Macau

  • Jeng-Chung Chen

    • Department of Physics, National Tsing Hua University, Taiwan
    • Center for Quantum Technology, National Tsing Hua University
    • National Tsing Hua University

  • Per Delsing

    • Microtechnology and Nanoscience MC2, Chalmers University of Technology
    • Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology
    • Chalmers University of Technology
    • Microtechnology and Nanoscience, MC2, Chalmers University of Technology

  • Franco Nori

    • RIKEN/University of Michigan
    • Center for Emergent Matter Science, RIKEN, Japan
    • Physics Department, The University of Michigan
    • RIKEN

  • Io-Chun Hoi

    • Center for Quantum Technology, National Tsing Hua University
    • National Tsing Hua University