Measurement of the phase non-reciprocity of the Josephson parametric converter

ORAL

Abstract

Non-reciprocal devices such as circulators and isolators play a pivotal role in many microwave experiments on quantum superconducting circuits. However, non-reciprocity in these devices is achieved using ferrites and permanent magnets which are not suitable for on chip integration. We have built a symmetric two port device by pairing two Josephson parametric converters (JPCs) working in pure conversion mode, each of which is driven with an independent pump tone. We observed a non-reciprocal phase shift between the two ports, which depends on the phase difference between the two pumps. The present noiseless system constitutes an important step towards the implementation of a noiseless gyrator, the main building block of an on-chip circulator for back-action free quantum measurement.

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Authors

  • Baleegh Abdo

    Applied Physics - Yale University, Yale University, Dept. of Applied Physics

  • Katrina Sliwa

    Applied Physics Dept., Yale University, Applied Physics - Yale University, Yale University, Dept. of Applied Physics

  • Archana Kamal

    Yale University, Applied Physics, Yale University, Departments of Physics and Applied Physics, Yale University, Applied Physics - Yale University

  • Flavius Schackert

    Applied Physics - Yale University, Yale University, Dept. of Applied Physics

  • Michael Hatridge

    Applied Physics Dept., Yale University, Applied Physics - Yale University, Yale University, Dept. of Applied Physics

  • Luigi Frunzio

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

  • Michel Devoret

    Yale University, Applied Physics, Yale University, Applied Physics Department Yale University, Department of Applied Physics, Yale University, Departments of Physics and Applied Physics, Yale University, Applied Physics - Yale University, Yale University, Dept. of Applied Physics, Applied Physics Dept. Yale University