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Showing 1–6 of 6 results
Advanced filters: Author: Joel Wallman Clear advanced filters

    • Bernard Carr
    • Joel Primack
    News & Views
    Nature
    Volume: 345, P: 478-479

  • Qutrits, or quantum three-level systems, can provide advantages over qubits in certain quantum information applications, and high-fidelity single-qutrit gates have been demonstrated. Goss et al. realize high-fidelity entangling gates between two superconducting qutrits that are universal for ternary computation.

    • Noah Goss
    • Alexis Morvan
    • Irfan Siddiqi
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-6

  • Quantum computing promises advantages over classical computing for certain problems; now ‘quantum contextuality’ — a generalization of the concept of quantum non-locality — is shown to be a critical resource that gives the most promising class of quantum computers their power.

    • Mark Howard
    • Joel Wallman
    • Joseph Emerson
    Research
    Nature
    Volume: 510, P: 351-355

  • Checking the quality of operations of quantum computers in a reliable and scalable way is still an open challenge. Here, the authors show how to characterise multi-qubit operations in a way that scales favourably with the system’s size, and demonstrate it on a 10-qubit ion-trap device.

    • Alexander Erhard
    • Joel J. Wallman
    • Rainer Blatt
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-7

  • A protocol for the reliable, efficient and precise characterization of quantum noise is reported and implemented in an architecture consisting of 14 superconducting qubits. Correlated noise within arbitrary sets of qubits can be easily detected.

    • Robin Harper
    • Steven T. Flammia
    • Joel J. Wallman
    Research
    Nature Physics
    Volume: 16, P: 1184-1188