Demonstration of Universal Parametric Entangling Gates on a Multi-Qubit Lattice

ORAL

Abstract

We show that parametric coupling techniques can be used to generate selective entangling interactions for multi-qubit processors, and in such a way that is scalable. By inducing coherent population exchange between adjacent qubits under frequency modulation, we implement a universal gateset for a linear array of eight superconducting qubits. We establish the suitability of this technique by doing an error analysis on our two-qubit gate fidelity (via QPT), and by preparing an eight-qubit register in all possible bitstring permutations and monitor the fidelity of a two-qubit gate across one pair of these qubits. These results thus offer a path to a scalable architecture with high selectivity and low crosstalk.

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Presenters

  • Alexa Staley

    • Rigetti Quantum Computing

Authors

  • Alexa Staley

    • Rigetti Quantum Computing

  • Alexander Hudson

    • Rigetti Quantum Computing

  • Chris Osborn

    • Rigetti Quantum Computing

  • Nikolas Tezak

    • Rigetti Computing
    • Rigetti Quantum Computing

  • Guen Prawiroatmodjo

    • Rigetti Quantum Computing
    • Center for Quantum Devices, University of Copenhagen

  • Michael Sheer

    • Rigetti Quantum Computing

  • Nasser Alidoust

    • Rigetti Quantum Computing

  • Eyob Sete

    • Rigetti Quantum Computing

  • Nicolas Didier

    • Rigetti Quantum Computing

  • Marcus da Silva

    • Rigetti Quantum Computing
    • Rigetti Computing

  • Blake Johnson

    • Rigetti Quantum Computing

  • Sabrina Hong

    • Rigetti Quantum Computing

  • Andrew Bestwick

    • Rigetti Quantum Computing

  • Alexander Papageorge

    • Rigetti Quantum Computing

  • Ben Bloom

    • Rigetti Quantum Computing

  • Deanna Abrams

    • Rigetti Quantum Computing

  • Shane Caldwell

    • Rigetti Quantum Computing

  • Peter Karalekas

    • Rigetti Quantum Computing

  • Prasahnt Sivarajah

    • Rigetti Quantum Computing

  • Claire Thomas

    • Rigetti Quantum Computing

  • Maxwell Block

    • Rigetti Quantum Computing

  • Genya Crossman

    • Rigetti Quantum Computing

  • Michael Selvanayagam

    • Rigetti Quantum Computing

  • Matt Reagor

    • Rigetti Quantum Computing

  • Chad Rigetti

    • Rigetti Quantum Computing