Approaching 10 Milliseconds for Aluminum Cavities in the Quantum Regime

ORAL

Abstract

One of the most promising solid state quantum computing architectures couples superconducting qubits to microwave resonators (circuit QED), a system in which three-dimensional microwave cavities have become a valuable resource. Participation-ratio calculations predict at least four orders of magnitude longer lifetimes in 3D cavities than their planar resonator counterparts with equal material losses. Motivated by this principle, we report multiple superconducting aluminum cavities with lifetimes on the order of 10ms at single photon power and millikelvin temperatures. We also present details on extracting the materials properties and the noise performance of a long lived superconducting cavity resonator, including bounds on the intrinsic dephasing time (T$_{\phi}$) of such a resource.

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Authors

  • Matthew Reagor

    Department of Physics and Applied Physics, Yale University

  • Hanhee Paik

    Raytheon BBN Technologies and Yale University, Department of Physics and Applied Physics, Yale University

  • Gianluigi Catelani

    Forschungszentrum Juelich, Peter Gruenberg Institut, Department of Physics and Applied Physics, Yale University

  • Luyan Sun

    Department of Physics and Applied Physics, Yale University

  • Christopher Axeline

    Department of Physics and Applied Physics, Yale University

  • Teresa Brecht

    Department of Physics and Applied Physics, Yale University

  • Jacob Blumoff

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

  • Leonid Glazman

    Department of Physics, Yale University, Yale University, Applied Physics Department, Yale University, Department of Physics and Applied Physics, Yale University

  • Robert Schoelkopf

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