Scaling of variational quantum eigensolver performance in a superconducting quantum processor

ORAL

Abstract

The calculation of molecular energies and dynamics from first-principles is a classically intractable problem due to the exponential scaling in computational cost with both the number of atoms and the basis set size. Variational quantum-classical hybrid algorithms offer a promising route towards solving currently intractable molecular structure problems in near-term quantum processors. We experimentally quantify the scaling of convergence, speed, and accuracy of a hybrid quantum-classical variational simulation of chemical energies using a gate-based superconducting quantum processor with up to 8 qubits.

*This work was funded by Army Research Office, the Department of Energy, and the Samsung GRO program.

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Presenters

  • Jonathan Carter

    • Lawrence Berkeley National Lab

Authors

  • Kevin O'Brien

    • Univ of California – Berkeley
    • Univ of California - Berkeley
    • University of California - Berkeley
    • Physics, Univ of California - Berkeley

  • James Colless

    • Department of Physics, University of California, Berkeley
    • Univ of California - Berkeley
    • Physics, Univ of California - Berkeley

  • Vinay Ramasesh

    • Department of Physics, University of California Berkeley
    • Univ of California – Berkeley
    • Univ of California - Berkeley
    • Physics, Univ of California - Berkeley

  • Dar Dahlen

    • Univ of California – Berkeley
    • Univ of California - Berkeley
    • Physics, Univ of California - Berkeley

  • William Livingston

    • Univ of California – Berkeley
    • Physics, Univ of California - Berkeley
    • Univ of California - Berkeley

  • John Mark Kreikebaum

    • Univ of California – Berkeley
    • Univ of California - Berkeley
    • Physics, Univ of California - Berkeley

  • Machiel Blok

    • Univ of California – Berkeley
    • Univ of California - Berkeley
    • Physics, Univ of California - Berkeley

  • Wibe de Jong

    • Lawrence Berkeley National Lab

  • Jonathan Carter

    • Lawrence Berkeley National Lab

  • Irfan Siddiqi

    • Univ of California - Berkeley
    • Department of Physics, University of California Berkeley
    • Department of Physics, University of California, Berkeley
    • University of California Berkeley
    • Univ of California – Berkeley
    • Physics, Univ of California -- Berkeley
    • Physics, Univ of California - Berkeley
    • University of California - Berkeley