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Showing 1–3 of 3 results
Advanced filters: Author: Mick Ramsey Clear advanced filters
  • Using a cryogenic 300-mm wafer prober, a new approach for the testing of hundreds of industry-manufactured spin qubit devices at 1.6 K provides high-volume data on performance, allowing optimization of the complementary metal–oxide–semiconductor (CMOS)-compatible fabrication process.

    • Samuel Neyens
    • Otto K. Zietz
    • James S. Clarke
    ResearchOpen Access
    Nature
    Volume: 629, P: 80-85
  • Parallel operation of two exchange-only qubits consisting of six quantum dots arranged linearly is shown to be achievable and maintains qubit control quality compared with sequential operation, with potential for use in scaled quantum computing.

    • Mateusz T. Mądzik
    • Florian Luthi
    • James S. Clarke
    ResearchOpen Access
    Nature
    Volume: 647, P: 870-875
  • Gate-defined quantum dots are a promising candidate system for realizing scalable, coupled qubit systems and serving as a fundamental building block for quantum computers. However, present-day quantum dot devices suffer from imperfections that must be accounted for, which hinders the characterization, tuning, and operation process. Moreover, with an increasing number of quantum dot qubits, the relevant parameter space grows sufficiently to make heuristic control infeasible. Thus, it is imperative that reliable and scalable autonomous tuning approaches are developed. This meeting report outlines current challenges in automating quantum dot device tuning and operation with a particular focus on datasets, benchmarking, and standardization. We also present insights and ideas put forward by the quantum dot community on how to overcome them. We aim to provide guidance and inspiration to researchers invested in automation efforts.

    • Justyna P. Zwolak
    • Jacob M. Taylor
    • Brian Weber
    News & ViewsOpen Access
    npj Quantum Information
    Volume: 10, P: 1-8