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