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Showing 1–9 of 9 results
Advanced filters: Author: Kyle Serniak Clear advanced filters

  • Nonlinear light-matter coupling has applications in quantum technologies, for instance in quantum-non-demolition measurements, but its strength is typically limited. Here the authors demonstrate near-ultrastrong nonlinear light-matter coupling in a superconducting circuit with two transmons and a quarton coupler.

    • Yufeng Ye
    • Jeremy B. Kline
    • Kevin P. O’Brien
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-8

  • Ionizing radiation from cosmic rays has been identified as a source of correlated errors in superconducting qubits, but a direct demonstration of this link has been lacking. Here the authors measure the coincidence between correlated errors and incident cosmic rays in a chip with 10 transmon qubits.

    • Patrick M. Harrington
    • Mingyu Li
    • Joseph A. Formaggio
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-15

  • Large quantum computers are likely to require methods of connecting devices by transmitting and absorbing photons. Entanglement between two superconducting qubit devices has now been established using a waveguide with tunable directionality.

    • Aziza Almanakly
    • Beatriz Yankelevich
    • William D. Oliver
    Research
    Nature Physics
    Volume: 21, P: 825-830

  • Research on superconductivity in magic-angle twisted bilayer graphene reveals unconventional behaviour, an anisotropic gap and a significant role of quantum geometry, using combined d.c. transport and microwave measurements, suggesting new insights into superconductivity mechanisms.

    • Miuko Tanaka
    • Joel Î-j. Wang
    • William D. Oliver
    Research
    Nature
    Volume: 638, P: 99-105

  • Arrays of superconducting transmon qubits can be used to study the Bose–Hubbard model. Synthetic electromagnetic fields have now been added to this analogue quantum simulation platform.

    • Ilan T. Rosen
    • Sarah Muschinske
    • William D. Oliver
    Research
    Nature Physics
    Volume: 20, P: 1881-1887

  • By emulating a 2D hard-core Bose–Hubbard lattice using a controllable 4 × 4 array of superconducting qubits, volume-law entanglement scaling as well as area-law scaling at different locations in the energy spectrum are observed.

    • Amir H. Karamlou
    • Ilan T. Rosen
    • William D. Oliver
    ResearchOpen Access
    Nature
    Volume: 629, P: 561-566

  • Quantum annealers hold promise of outperforming classical computers in solving hard optimization problems, but one main challenge is understanding the role of noise in quantum annealing. Here, the authors characterize the relevant noise sources in a tunable flux qubit, a building block for quantum annealers, and provide a benchmark for future work on highly-coherent quantum annealers.

    • Robbyn Trappen
    • Xi Dai
    • Adrian Lupascu
    ResearchOpen Access
    Communications Physics
    Volume: 8, P: 1-10