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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.

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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