Towards 90{\%} efficient generation, transport, and readout of a microwave squeezed state

ORAL

Abstract

A Josephson parametric amplifier (JPA) can be used as a phase sensitive amplifier to create a squeezed state of the microwave vacuum, which can in turn be detected with a second JPA [1]. Such an arrangement, known as a squeezed state receiver, can be used to circumvent the vacuum fluctuations that ultimately limit the search for dark matter axions [2]. But the benefit of the squeezed state is diminished to the degree that the state is lost in transit from one JPA to the other. In this talk we detail the sources of loss in the microwave path, along with strategies for their minimization. In conjunction, we describe how the choice of JPA pump modality impacts this loss budget.

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Authors

  • Daniel Palken

    JILA, University of Colorado at Boulder, JILA, Univ of Colorado - Boulder

  • Maxime Malnou

    JILA, Univ of Colorado - Boulder

  • Will Kindel

    JILA, Univ of Colorado - Boulder, JILA and Department of Physics, University of Colorado, Boulder, Colorado 80309, USA

  • Leila Vale

    National Institute of Standard and Technology - Boulder

  • Gene Hilton

    National Institute of Standards and Technology, Boulder, National Institute of Standard and Technology - Boulder, National Institute of Standards and Technology - Boulder

  • Konrad Lehnert

    JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado, JILA, Univ of Colorado - Boulder, JILA and Department of Physics, University of Colorado and NIST, JILA and the Dept. of Physics, University of Colorado and NIST