Bosonic superradiance and subradiance in an array of superconducting transmon devices

ORAL

Abstract


Multiple atoms coherently interacting with electromagnetic modes can give rise to collective effects, namely superradiance and subradiance. Most of the research on these topics has focused on two-level systems. Recent experimental progress in realizing large arrays of superconducting transmon devices with multiple excitations embedded inside a waveguide motivated us to extend the formalism developed by Lalumiere et al. [1] to multilevel interacting bosonic systems. Analytical and numerical analysis of the eigenvalues and eigenstates of the effective non-Hermitian Bose-Hubbard Hamiltonian reveals an enhanced superradiance arising from the bosonic nature of transmon excitations. The validity of the bosonic model as well as the existence of collective effects in this system are verified by studying the transmission of radiation both experimentally and numerically.
[1] K. Lalumiere et al., Phys. Rev. A 88, 043806 (2013)

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Presenters

  • Tuure Orell

    • Nano and molecular systems research unit, Univ of Oulu
    • University of Oulu

Authors

  • Tuure Orell

    • Nano and molecular systems research unit, Univ of Oulu
    • University of Oulu

  • Maximilian Zanner

    • Institute for Quantum Optics and Quantum Information
    • Institute for Experimental Physics, University of Innsbruck
    • Univ of Innsbruck
    • Experimental Physics, University of Innsbruck

  • Aleksei Sharafiev

    • Institute for Experimental Physics, University of Innsbruck
    • Inst Quantum Optics & Quantum Info

  • Stefan Oleschko

    • Institute for Experimental Physics, University of Innsbruck
    • Univ of Innsbruck

  • Mathieu L. Juan

    • Université de Sherbrooke
    • Institut quantique et Département de physique, Université de Sherbrooke

  • Romain Albert

    • Institute for Experimental Physics, University of Innsbruck
    • Univ of Innsbruck
    • CEA Grenoble

  • Gerhard Kirchmair

    • Institute for Quantum Optics and Quantum Information
    • Univ of Innsbruck
    • Institute for Experimental Physics, University of Innsbruck
    • University of Innsbruck

  • Matti Silveri

    • Nano and Molecular Systems Research Unit, University of Oulu
    • Nano and molecular systems research unit, University of Oulu
    • Nano and molecular systems research unit, Univ of Oulu
    • University of Oulu