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Showing 1–2 of 2 results
Advanced filters: Author: Anjali Premkumar Clear advanced filters

  • Quantum computers based on superconducting transmon qubits are limited by single qubit lifetimes and coherence times, which are orders of magnitude shorter than limits imposed by bulk material properties. Here, the authors fabricate two-dimensional transmon qubits with both lifetimes and coherence times longer than 0.3 milliseconds by replacing niobium with tantalum in the device.

    • Alexander P. M. Place
    • Lila V. H. Rodgers
    • Andrew A. Houck
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-6

  • Understanding the connection between qubit coherence and microscopic materials properties is vital for improving device performance. Here, the relaxation times of superconducting transmon qubits are found to be directly correlated with Nb film properties such as grain size and surface oxide composition.

    • Anjali Premkumar
    • Conan Weiland
    • Ignace Jarrige
    ResearchOpen Access
    Communications Materials
    Volume: 2, P: 1-9