Autonomous Fock state stabilization by reservoir engineering

ORAL

Abstract

Quantum computing requires the ability to create and maintain quantum states. However, due to persistent coupling to the environment a quantum state suffers from decoherence. In order to fight decoherence physicists have come up with different approaches such as circuit based quantum error correction and reservoir engineering. Here we present a reservoir engineering scheme which autonomously stabilizes Fock states in a superconducting waveguide cavity. We will discuss how a vertical transmon qubit is used as a nonlinear coupler between two superconducting waveguide cavities. This nonlinear coupling creates a direct, strong-dispersive interaction between the two cavities. We utilize this interaction to autonomously stabilize Fock states by applying classical continuous wave drives. We present preliminary experimental results.

*Work supported by ARO and IARPA.

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Authors

  • E. Holland

    • Department of Physics and Department of Applied Physics, Yale University, New Haven, CT 06511

  • B. Vlastakis

    • Department of Physics and Department of Applied Physics, Yale University, New Haven, CT 06511

  • R. Heeres

    • Department of Physics and Department of Applied Physics, Yale University, New Haven, CT 06511

  • U. Vool

    • Department of Physics and Department of Applied Physics, Yale University, New Haven, CT 06511

  • Z. Leghtas

    • Department of Physics and Department of Applied Physics, Yale University, New Haven, CT 06511

  • L. Frunzio

    • Department of Physics and Department of Applied Physics, Yale University, New Haven, CT 06511

  • G. Kirchmair

    • Institut fur Quantenoptik und Quanteninformation, Osterreichische Akademie der Wissenschaften, Otto-Hittmair-Platz 1, A-6020 Innsbruck, Austria

  • M. Mirrahimi

    • Department of Physics and Department of Applied Physics, Yale University, New Haven, CT 06511

  • R.J. Schoelkopf

    • Department of Physics and Department of Applied Physics, Yale University, New Haven, CT 06511