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Showing 1–17 of 17 results
Advanced filters: Author: "A. Steele" Clear advanced filters

  • Semiconducting carbon nanotubes have already demonstrated their potential for solar-cell and photodetector applications. Here, the authors use scanning photocurrent microscopy to show that the photocurrent generated in such nanotubes can be dominated by both photovoltaic and photothermal mechanisms.

    • G. Buchs
    • S. Bagiante
    • G. A. Steele
    Research
    Nature Communications
    Volume: 5, P: 1-6

  • Large spin-orbit coupling in solids has the potential to yield materials that can display unique properties such as non-trivial topological ordering. Steele et al.report an order of magnitude higher zero-field spin splitting in carbon than has been measured previously.

    • G.A. Steele
    • F. Pei
    • L.P. Kouwenhoven
    Research
    Nature Communications
    Volume: 4, P: 1-7

  • Mechanical resonators lose energy over time due to both dissipative and dephasing processes. Schneider et al. now use a fast time-domain technique to separate the influence of these two types of mechanism, and demonstrate that at high driving power, dephasing becomes the dominant factor.

    • Ben H. Schneider
    • Vibhor Singh
    • Gary A. Steele
    Research
    Nature Communications
    Volume: 5, P: 1-5

  • Optomechanics is the use of light to control the motion of a mechanical resonator, potentially cooling it to the quantum ground state. Here, the authors cool a millimetre-scale silicon nitride membrane to an effective temperature of 34 microkelvin by coupling it to a three-dimensional microwave cavity.

    • Mingyun Yuan
    • Vibhor Singh
    • Gary A. Steele
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-6

  • Single electrons and single holes have been confined inside a double quantum dot in a carbon nanotube for the first time. A previously unknown type of tunnelling that is analogous to that in the Klein paradox of relativistic quantum mechanics has also been observed.

    • G. A. Steele
    • G. Gotz
    • L. P. Kouwenhoven
    Research
    Nature Nanotechnology
    Volume: 4, P: 363-367

  • Analogous to the radiation-pressure coupling known in optomechanics, photon-pressure interaction between superconducting circuits can reach the strong coupling regime, which allows flexible control of the electromagnetic resonator’s quantum state.

    • D. Bothner
    • I. C. Rodrigues
    • G. A. Steele
    Research
    Nature Physics
    Volume: 17, P: 85-91

  • Capacitive optomechanics in the microwave regime suffers from inherent and practical limitations on the maximum achievable coupling strength. Here, the authors demonstrate flux-mediated inductive optomechanical coupling allowing tunable single-photon coupling rates.

    • I. C. Rodrigues
    • D. Bothner
    • G. A. Steele
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-7

  • Microwave circuits are interesting tools for microwave optomechanics and quantum information processing. Here, the authors demonstrate a phase-sensitive microwave amplifier by using parametric frequency modulation of a MHz mechanical nanobeam integrated in a superconducting microwave cavity.

    • D. Bothner
    • S. Yanai
    • G. A. Steele
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-9

  • Encapsulated graphene Josephson junctions are promising for microwave quantum circuits but so far haven’t been explored. Here, Schmidt and Jenkins et al. observe a gate-tunable Josephson inductance in a microwave circuit based on a ballistic graphene Josephson junction embedded in a superconducting cavity.

    • Felix E. Schmidt
    • Mark D. Jenkins
    • Gary A. Steele
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-7

  • Instead of using light to study mechanical motion, scientists have now demonstrated the use of mechanics to probe light, using an excitonic optomechanics coupling that paves the way to the implementation of cavity-free optomechanics.

    • Gary A. Steele
    • Herre S. J. van der Zant
    News & Views
    Nature Photonics
    Volume: 6, P: 721-722

  • A Cooper-pair box qubit is used to squeeze the energy of a heavy oscillating membrane towards a quantum energy eigenstate, bringing measurements of how mass and quantum mechanics interact one step closer.

    • Mario Gely
    • Gary A. Steele
    News & Views
    Nature Physics
    Volume: 17, P: 299-300

  • Cavity optomechanics studies interactions between mechanical oscillators and the radiation pressure induced by intracavity photons. The authors embedded a nonlinear Josephson junction in their microwave cavity to make the cavity response highly nonlinear and observed a counter-intuitive optomechanical process, blue-tone mechanical cooling.

    • Daniel Bothner
    • Ines C. Rodrigues
    • Gary A. Steele
    ResearchOpen Access
    Communications Physics
    Volume: 5, P: 1-10