A nonlinear THz study of strong light-matter coupling between plasmonic metamaterials and a superconducting Josephson Plasmon in La<sub>2-x</sub>Sr<sub>x</sub>CuO<sub>4</sub>.

ORAL

Abstract

The Josephson plasma resonance (JPR) in layered high temperature superconducting cuprates provides a useful probe of the superconducting condensate, as well as an avenue to couple incident electromagnetic fields to the condensate. We enhance this light-matter coupling by applying interchangeable metamaterial tapes to a c-axis single crystal of La2-xSrxCuO4 and perform linear THz time domain spectroscopy in reflection in order to identify anti-crossing behavior characteristic of strong coupling. We then drive the hybrid superconducting metamaterial system with large single cycle THz fields in excess of 100kV/cm in order to explore emergent nonlinear behavior of the coupled system. This work informs future possibilities of utilizing strong coupling effects in conjunction with large transient fields to achieve coherent control of a superconducting condensate and an avenue towards light enhanced superconductivity.

*Research supported by DOE-BES under DE-SC0018218.

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Presenters

  • Jacob Schalch

    • UC San Diego
    • University of California, San Diego
    • Department of Physics, University of California San Diego

Authors

  • Jacob Schalch

    • UC San Diego
    • University of California, San Diego
    • Department of Physics, University of California San Diego

  • CHUNXU CHEN

    • Boston University
    • department of mechanical engineering, boston university

  • Xiaoguang Zhao

    • Boston University
    • department of mechanical engineering, boston university

  • Dimitri Basov

    • Department of Physics, Columbia University in the City of New York
    • Department of Physics, Columbia University, New York 10027
    • department of physics, columbia university
    • Department of Physics, Columbia University
    • Physics, Columbia University
    • Columbia University

  • Michael Fogler

    • University of California, San Diego
    • Physics, University of California, San Diego
    • University of California San Diego
    • UC San Diego

  • Xin Zhang

    • Boston University
    • department of mechanical engineering, boston university

  • Richard Douglas Averitt

    • UC San Diego
    • University of California, San Diego
    • Department of Physics, University of California San Diego
    • Univ of California - San Diego