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Showing 1–9 of 9 results
Advanced filters: Author: Michael J. Gullans Clear advanced filters
  • Reconfigurable arrays of up to 448 neutral atoms are used to implement and combine the key elements of a universal, fault-tolerant quantum processing architecture and experimentally explore their underlying working mechanisms.

    • Dolev Bluvstein
    • Alexandra A. Geim
    • Mikhail D. Lukin
    ResearchOpen Access
    Nature
    Volume: 649, P: 39-46
  • Measurement-induced phase transitions are notoriously difficult to observe. Here, the authors propose a neural-network-based method to map measurement outcomes to the state of reference qubits, allowing observation of the transition and extracting its critical exponents.

    • Hossein Dehghani
    • Ali Lavasani
    • Michael J. Gullans
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-12
  • Coherent noise affecting a random error correcting code is now shown to produce a transition between phases that accumulate and destroy magic.

    • Pradeep Niroula
    • Christopher David White
    • Michael J. Gullans
    Research
    Nature Physics
    Volume: 20, P: 1786-1792
  • A programmable quantum processor based on encoded logical qubits operating with up to 280 physical qubits is described, in which improvement of algorithmic performance using a variety of error-correction codes is enabled.

    • Dolev Bluvstein
    • Simon J. Evered
    • Mikhail D. Lukin
    ResearchOpen Access
    Nature
    Volume: 626, P: 58-65
  • Many-body open quantum systems are predicted to undergo a phase transition towards a pure state through frequent projective measurements. The phases separated by this transition have now been observed with random circuits on a trapped-ion computer.

    • Crystal Noel
    • Pradeep Niroula
    • Christopher Monroe
    Research
    Nature Physics
    Volume: 18, P: 760-764
  • The integration of gate-defined quantum dots with superconducting resonators results in a hybrid architecture that holds promise for quantum information processing. This Review discusses recent experimental results in the field, including the achievement of strong coupling between single microwave photons and the charge and spin degrees of freedom, and examines the underlying physics.

    • Guido Burkard
    • Michael J. Gullans
    • Jason R. Petta
    Reviews
    Nature Reviews Physics
    Volume: 2, P: 129-140
  • 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