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

  • 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

  • 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

  • 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

  • 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

  • Ionizing radiation from environmental radioactivity and cosmic rays increases the density of broken Cooper pairs in superconducting qubits, reducing their coherence times, but can be partially mitigated by lead shielding.

    • Antti P. Vepsäläinen
    • Amir H. Karamlou
    • William D. Oliver
    Research
    Nature
    Volume: 584, P: 551-556

  • A quasiparticle in Andreev levels was coupled to a superconducting microwave resonator and its spin was monitored in real time. This has potential applications in the readout of superconducting spin qubits and measurements of Majorana fermions.

    • M. Hays
    • V. Fatemi
    • M. H. Devoret
    Research
    Nature Physics
    Volume: 16, P: 1103-1107