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Waveguide-mediated Interactions Between Giant Superconducting Artificial Atoms

ORAL

Abstract

In quantum optics experiments, atoms are typically treated as small point-like objects compared to the wavelength of the modes they interact with. Superconducting circuits offer a platform to study the physics of systems where this approximation no longer holds. Here, we realize a “giant” artificial atom by coupling a transmon qubit to multiple positions along a superconducting waveguide with separation on the order of the qubit wavelength. We show that the coupling between the qubits and the waveguide can be strongly tuned with the qubit frequency. Furthermore, we demonstrate waveguide-mediated exchange interactions between two giant atoms that can be tuned to be “decoherence-free” with respect to the waveguide. Finally, we show how varying the number of and distance between coupling points can be used to engineer exotic decay and coupling spectra, with applications to quantum information and simulation.

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Presenters

  • Bharath Kannan

    Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Research Laboratory of Electronics, Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology (MIT)

Authors

  • Bharath Kannan

    Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Research Laboratory of Electronics, Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology (MIT)

  • Max Ruckreigel

    Research Laboratory of Electronics, Massachusetts Institute of Technology

  • Daniel L Campbell

    Research Laboratory of Electronics, Massachusetts Institute of Technology

  • Anton Frisk Kockum

    Chalmers Univ of Tech, Department of Microtechnology and Nanoscience, Chalmers University of Technology, MC2, Chalmers University of Technology

  • Jochen Braumueller

    Massachusetts Institute of Technology MIT, Research Laboratory of Electronics, Massachusetts Institute of Technology, Massachusetts Institute of Technology

  • Roni Winik

    Research Laboratory of Electronics, Massachusetts Institute of Technology, Research Laboratory of Electronics, Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology

  • Morten Kjaergaard

    Research Laboratory of Electronics, Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology MIT, Research Laboratory of Electronics, Massachusetts Institute of Technology, Massachusetts Institute of Technology

  • David K Kim

    MIT Lincoln Laboratory, MIT Lincoln Lab, MIT-Lincoln Lab, MIT Lincoln Laboratories, Lincoln Laboratory, Massachusetts Institute of Technology (MIT), Massachusetts Institute of Technology (MIT) Lincoln Laboratory

  • Alexander Melville

    MIT Lincoln Laboratory, MIT Lincoln Lab, MIT Lincoln Laboratories, Massachusetts Institute of Technology (MIT) Lincoln Laboratory

  • Bethany Niedzielski

    MIT Lincoln Laboratory

  • Jonilyn Yoder

    MIT Lincoln Laboratory, MIT-Lincoln Lab, Lincoln Laboratory, Massachusetts Institute of Technology (MIT), MIT Lincoln Lab

  • Terry Philip Orlando

    Electrical Engineering and Computer Science, Research Laboratory of Electronics, Massachusetts Institute of Technology, Research Laboratory of Electronics, Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology MIT, Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Research Laboratory of Electronics, Massachusetts Institute of Technology, Massachusetts Institute of Technology, MIT Lincoln Laboratory, Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology (MIT)

  • Simon Gustavsson

    Research Laboratory of Electronics, Massachusetts Institute of Technology, Research Laboratory of Electronics, Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology, Research Laboratory of Electronics, Massachusetts Institute of Technology (MIT)

  • William Oliver

    Research Laboratory of Electronics, Department of Electrical Engineering and Computer Science, Department of Physics, MIT Lincoln Laboratory, Massachusetts Institute of Techn, MIT Lincoln Lab, MIT Lincoln Laboratory, MIT Lincoln Laboratory, Massachusetts Institute of Technology, Department of Physics, Department of Electrical Engineering and Computer Science, Research Laboratory of Electronics, Lincoln Laboratory, Massachusetts Institute of Technology, Research Laboratory of Electronics, Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology MIT, Department of Electrical Engineering and Computer Science, Department of Physics, Massachusetts Institute of Technology; MIT Lincoln Laboratory, Department of Electrical Engineering and Computer Science, Department of Physics, MIT Lincoln Laboratory, Massachusetts Institute of Technology, Massachusetts Institute of Technology, Research Laboratory of Electronics, Massachusetts Institute of Technology, Research Laboratory of Electronics, Department of Electrical Engineering & Computer Science, Department of Physics, Massachusetts Institute of Technology and MIT Lincoln Labo, Physics, MIT, MIT-Lincoln Lab, MIT Lincoln Laboratories, Research Laboratory of Electronics, Department of Physics, Department of Electrical Engineering and Computer Science, Lincoln Laboratory, Massachusetts Institute of Technolog