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Showing 1–8 of 8 results
Advanced filters: Author: Eric Ostby Clear advanced filters

  • The study of complexity in quantum systems is a fascinating topic, which however is still in its infancy, especially at the experimental level. Here, the authors report on the observation of “small-world” characteristics in the network of quantum correlations within chains of up to 23 superconducting qubits long.

    • Eric B. Jones
    • Logan E. Hillberry
    • Lincoln D. Carr
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-7

  • This paper demonstrates a high-Q microcavity for surface plasmons that is fabricated by coating the surface of high-Q silica microresonator with a thin layer of noble metal. This structure enables room-temperature operation with a Q-factor of around 1380 in the near infrared for surface plasmon modes. The work also includes a coupling scheme where a tapered optical fibre is in near-contact with the cavity, which provides a convenient way for selectively exciting and probing confined plasmon modes.

    • Bumki Min
    • Eric Ostby
    • Kerry Vahala
    Research
    Nature
    Volume: 457, P: 455-458

  • The Fermi-Hubbard model represents one of the benchmarks for testing quantum computational methods for condensed matter. Here, the authors are able to reproduce qualitative properties of the model on 1 × 8 and 2 × 4 lattices, by running a VQE-based algorithm on a superconducting quantum processor.

    • Stasja Stanisic
    • Jan Lukas Bosse
    • Ashley Montanaro
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-11

  • A study establishes a scalable approach to engineer and characterize a many-body-localized discrete time crystal phase on a superconducting quantum processor.

    • Xiao Mi
    • Matteo Ippoliti
    • Pedram Roushan
    ResearchOpen Access
    Nature
    Volume: 601, P: 531-536

  • It is hoped that quantum computers may be faster than classical ones at solving optimization problems. Here the authors implement a quantum optimization algorithm over 23 qubits but find more limited performance when an optimization problem structure does not match the underlying hardware.

    • Matthew P. Harrigan
    • Kevin J. Sung
    • Ryan Babbush
    Research
    Nature Physics
    Volume: 17, P: 332-336

  • Quantum supremacy is demonstrated using a programmable superconducting processor known as Sycamore, taking approximately 200 seconds to sample one instance of a quantum circuit a million times, which would take a state-of-the-art supercomputer around ten thousand years to compute.

    • Frank Arute
    • Kunal Arya
    • John M. Martinis
    Research
    Nature
    Volume: 574, P: 505-510