Demonstration of a Multi-Qubit Gate for All-to-All Connected Superconducting Qubits

ORAL

Abstract

Exploring highly connected networks of qubits is invaluable for implementing various quantum codes and simulations. All-to-all connectivity allows for entangling qubits with reduced gate depth. In the trapped-ion qubit community, the Mølmer-Sørensen gate is routinely used to entangle over a dozen qubits with high fidelity. We implement a Mølmer-Sørensen-like interaction through the use of shared coplanar waveguide (CPW) resonators to couple multiple superconducting qubits. We present two-qubit and multi-qubit experiments and detail sources of errors and prospects for scalability.

*This research was supported by the LPS HiPS program under ARO grant W911NF1810178 and the L'Oreal Fellowship.

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Presenters

  • Marie Lu

    • University of California, Berkeley

Authors

  • Marie Lu

    • University of California, Berkeley

  • Jean-Loup Ville

    • University of California, Berkeley

  • Joachim Cohen

    • Universite de Sherbrooke

  • Alexandru Petrescu

    • Universite de Sherbrooke

  • Sydney Schreppler

    • Microsoft Corp

  • Alexei N Marchenkov

    • Lawrence Berkeley National Laboratory

  • Larry Chen

    • University of California, Berkeley

  • Christian Juenger

    • Lawrence Berkeley National Laboratory

  • Archan Banerjee

    • Lawrence Berkeley National Laboratory

  • William P Livingston

    • University of California, Berkeley

  • John Mark Kreikebaum

    • Lawrence Berkeley National Laboratory

  • David I Santiago

    • Lawrence Berkeley National Laboratory
    • Computational Research Division, Lawrence Berkeley National Lab

  • Alexandre Blais

    • Universite de Sherbrooke
    • Institut quantique & Département de Physique, Université de Sherbrooke, Sherbrooke J1K2R1, Quebec, Canada

  • Irfan Siddiqi

    • University of California, Berkeley
    • Applied Mathematics and Computational Research and Materials Sciences Divisions, LBNL
    • Lawrence Berkeley National Laboratory
    • Applied Mathematics, Computational Research and Materials Sciences Divisions, Lawrence Berkeley National Lab