Demonstration of Tunable Three-Body Interactions between Superconducting Qubits

Tim Menke, William P. Banner, Thomas R. Bergamaschi, Agustin Di Paolo, Antti Vepsäläinen, Steven J. Weber, Roni Winik, Alexander Melville, Bethany M. Niedzielski, Danna Rosenberg, Kyle Serniak, Mollie E. Schwartz, Jonilyn L. Yoder, Alán Aspuru-Guzik, Simon Gustavsson, Jeffrey A. Grover, Cyrus F. Hirjibehedin, Andrew J. Kerman, and William D. Oliver
Phys. Rev. Lett. 129, 220501 – Published 21 November 2022
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Abstract

Nonpairwise multiqubit interactions present a useful resource for quantum information processors. Their implementation would facilitate more efficient quantum simulations of molecules and combinatorial optimization problems, and they could simplify error suppression and error correction schemes. Here, we present a superconducting circuit architecture in which a coupling module mediates two-local and three-local interactions between three flux qubits by design. The system Hamiltonian is estimated via multiqubit pulse sequences that implement Ramsey-type interferometry between all neighboring excitation manifolds in the system. The three-local interaction is coherently tunable over several MHz via the coupler flux biases and can be turned off, which is important for applications in quantum annealing, analog quantum simulation, and gate-model quantum computation.

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  • Received 17 April 2022
  • Accepted 17 October 2022

DOI:https://doi.org/10.1103/PhysRevLett.129.220501

© 2022 American Physical Society

Physics Subject Headings (PhySH)

General PhysicsQuantum Information, Science & TechnologyCondensed Matter, Materials & Applied Physics

Authors & Affiliations

Tim Menke1,2,3,*,‡, William P. Banner4,‡, Thomas R. Bergamaschi1, Agustin Di Paolo1, Antti Vepsäläinen1, Steven J. Weber5, Roni Winik1, Alexander Melville5, Bethany M. Niedzielski5, Danna Rosenberg5, Kyle Serniak5, Mollie E. Schwartz5, Jonilyn L. Yoder5, Alán Aspuru-Guzik6,7,8, Simon Gustavsson1, Jeffrey A. Grover1, Cyrus F. Hirjibehedin5, Andrew J. Kerman5, and William D. Oliver1,2,4,5,†

  • 1Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
  • 2Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
  • 3Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
  • 4Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
  • 5Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, Massachusetts 02421-6426, USA
  • 6Departments of Chemistry and Computer Science, University of Toronto, Toronto, Ontario M5G 1Z8, Canada
  • 7Vector Institute for Artificial Intelligence, Toronto, Ontario M5S 1M1, Canada
  • 8Canadian Institute for Advanced Research, Toronto, Ontario M5G 1Z8, Canada

  • *Corresponding author. timmenke@mit.edu
  • Corresponding author. william.oliver@mit.edu
  • These authors contributed equally to the work

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Issue

Vol. 129, Iss. 22 — 23 November 2022

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