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Showing 1–8 of 8 results
Advanced filters: Author: C. Vollgraff-Heidweiller Clear advanced filters

  • Typical quantum error correcting codes assign fixed roles to the underlying physical qubits. Now the performance benefits of alternative, dynamic error correction schemes have been demonstrated on a superconducting quantum processor.

    • Alec Eickbusch
    • Matt McEwen
    • Alexis Morvan
    ResearchOpen Access
    Nature Physics
    Volume: 21, P: 1994-2001

  • Colour code on a superconducting qubit quantum processor is demonstrated, reporting above-breakeven performance and logical error scaling with increased code size by a factor of 1.56 moving from distance-3 to distance-5 code.

    • N. Lacroix
    • A. Bourassa
    • K. J. Satzinger
    ResearchOpen Access
    Nature
    Volume: 645, P: 614-619

  • In a quantum simulation of a (2+1)D lattice gauge theory using a superconducting quantum processor, the dynamics of strings reveal the transition from deconfined to confined excitations as the effective electric field is increased.

    • T. A. Cochran
    • B. Jobst
    • P. Roushan
    ResearchOpen Access
    Nature
    Volume: 642, P: 315-320

  • It is hoped that simulations of molecules and materials will provide a near-term application of quantum computers. A study of the performance of error mitigation highlights the obstacles to scaling up these calculations to practically useful sizes.

    • T. E. O’Brien
    • G. Anselmetti
    • N. C. Rubin
    ResearchOpen Access
    Nature Physics
    Volume: 19, P: 1787-1792

  • An experimental investigation of the dynamics of the spin ½ Floquet XXZ model finds bound states as predicted, and also robustness to noise and non-integrability when theoretical descriptions start to fail.

    • A. Morvan
    • T. I. Andersen
    • P. Roushan
    ResearchOpen Access
    Nature
    Volume: 612, P: 240-245

  • A hybrid analogue–digital quantum simulator is used to demonstrate beyond-classical performance in benchmarking experiments and to study thermalization phenomena in an XY quantum magnet, including the breakdown of Kibble–Zurek scaling predictions and signatures of the Kosterlitz–Thouless phase transition.

    • T. I. Andersen
    • N. Astrakhantsev
    • X. Mi
    ResearchOpen Access
    Nature
    Volume: 638, P: 79-85

  • By implementing random circuit sampling, experimental and theoretical results establish the existence of transitions to a stable, computationally complex phase that is reachable with current quantum processors.

    • A. Morvan
    • B. Villalonga
    • S. Boixo
    ResearchOpen Access
    Nature
    Volume: 634, P: 328-333