Analog approaches to quantum computation using highly-controllable superconducting qubits

ORAL

Abstract

The first generation of quantum hardware that outperforms classical computers will likely be analog in nature. In an effort to realize such a platform, we have built a one-dimensional chain of 9 superconducting gmon qubits. This device provides individual time-dependent control over all nearest-neighbor couplings and local fields (X, Y, Z) in the multi-qubit Hamiltonian. In this talk, I will focus on open problems in non-equilibrium statistical mechanics where dynamical properties become impossible to compute for only a few 10s of qubits. In particular, I will review device performance and the scaling of analog errors with system size. By studying how errors scale during practical applications, we aim to predict if otherwise-intractable computations could be carried out with 30 to 40 qubits.

Authors

  • C. Neill

    • UCSB
  • P. Roushan

    • Google Inc.
  • R. Barends

    • Google Inc.
  • B. Campbell

    • UCSB
  • Y. Chen

    • Google Inc.
  • Z. Chen

    • UCSB
  • B. Chiaro

    • UCSB
  • A. Dunsworth

    • UCSB
  • A. Fowler

    • Google Inc.
  • E. Jeffrey

    • Google Inc.
  • J. Kelly

    • Google Inc.
  • E. Lucero

    • Google Inc.
  • A. Megrant

    • Google Inc.
  • J. Mutus

    • Google Inc.
  • M. Neeley

    • Google Inc.
  • P. O'Malley

    • UCSB
  • C. Quintana

    • UCSB
  • D. Sank

    • Google Inc.
  • J. Wenner

    • UCSB
  • T. White

    • Google Inc.
  • J. Martinis

    • Google Inc.