Lossless, coherent Josephson three-wave combiner

ORAL

Abstract

We designed and operated a three-wave beam-splitter/combiner, based on Josephson parametric converters, which performs frequency conversion without introducing losses and thus adding no noise to the processed signal. We in particular show that the unitary signal-idler scattering parameters of the device can be fully modulated in-situ by varying the intensity and phase of the pump tone feeding the system. By operating the device as a 50/50 beam-combiner, we interfere coherently two input coherent microwave beams with different frequencies and demonstrate that the resulting interference fringes generated by the relative phase of the pump is in agreement with theoretical predictions. Potential applications of the device include quantum information transduction and realization of an ultra-sensitive interferometer with controllable feedback.

*Work supported by: IARPA, ARO, and NSF

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Authors

  • Baleegh Abdo

    • Applied Physics Department, Yale University

  • K. Sliwa

    • Applied Physics Department, Yale University

  • Flavius Schackert

    • Applied Physics Department, Yale University

  • Nicolas Bergeal

    • LPEM-UMR8213/CNRS-ESPCI ParisTech-UPM

  • M. Hatridge

    • Applied Physics, Yale University
    • Applied Physics Department, Yale University

  • Luigi Frunzio

    • Applied Physics Department, Yale University
    • Yale University
    • Yale University Dept. of Applied Physics
    • Department of Physics and Applied Physics, Yale University

  • Douglas Stone

    • Applied Physics Department, Yale University

  • Michel Devoret

    • Applied Physics Department, Yale University