Engineering stabilizer measurements in circuit QED: I

ORAL

Abstract

Quantum error correction based on stabilizer codes has emerged as an attractive approach towards building a practical quantum information processor. One requirement for such a device is the ability to perform hardware efficient measurements on registers of qubits. We demonstrate a new protocol to realize such multi-qubit measurements. ~A key feature of our approach is that it enables arbitrary stabilizer measurements to be selected in software, and requires a relatively small number of buses, ancillae, and control lines. This allows for a minimally complex sample realizing a simple dispersive hamiltonian while maintaining a high degree of decoupling between our fixed-tuned qubits. We experimentally implement these measurements in 3D circuit QED using transmon qubits coupled to a common bus resonator. In this first of two talks, we introduce our 3D cQED system and describe the protocol for measuring n-qubit parities of a three qubit register.

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Authors

  • Kevin Chou

    Yale University

  • Jacob Blumoff

    Yale University

  • M. Reagor

    Department of Physics and Applied Physics, Yale University, New Haven, Connecticut, Departments of Applied Physics and Physics, Yale University, New Haven, Connecticut, USA., Yale University

  • C. Axline

    Yale University

  • R. Brierley

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

  • S. Nigg

    University of Basel

  • P. Reinhold

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

  • R. Heeres

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

  • C. Wang

    Yale University

  • K. Sliwa

    Department of Applied Physics, Yale University, Yale University

  • A. Narla

    Department of Applied Physics, Yale University, Yale University

  • M. Hatridge

    University of Pittsburgh

  • Liang Jiang

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

  • M. H. Devoret

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

  • S. M. Girvin

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

  • R. J. Schoekopf

    Yale University, Department of Applied Physics, Yale University, Department of Applied Physics and Physics, Yale University, Department of Physics and Applied Physics, Yale University, New Haven, Connecticut, Departments of Applied Physics and Physics, Yale University, New Haven, Connecticut, USA., Yale University, Department of Applied Physics, Yale University Department of Applied Physics