Scientists from the Swiss Nanoscience Institute and the University of Basel have succeeded in coupling an extremely small quantum dot with 1,000 times larger trumpet-shaped nanowire. The movement of the nanowire can be detected with a sensitivity of 100 femtometers via the wavelength of the light emitted by the quantum dot. Conversely, the oscillation of the nanowire can be influenced by excitation of the quantum dot with a laser. Nature Communications published the results.
Winner of the golden chalk, the golden correction pen & the golden scale 2017!
Die Georg H. Endress Stiftung unterstützt das Projekt «Quantum Science and Quantum Computing» der Universität Basel und der Albert-Ludwigs-Universität Freiburg mit bis zu zehn Millionen Franken über zehn Jahre. Das neue Exzellenz-Zentrum unter dem Dach von Eucor – The European Campus stärkt die Vorreiterrolle der beiden Universitäten im Bereich der Quantenphysik.
Scientists have developed a new method of characterizing graphene’s properties without applying disruptive electrical contacts, allowing them to investigate both the resistance and quantum capacitance of graphene and other two-dimensional materials. Researchers from the Swiss Nanoscience Institute and the University of Basel’s Department of Physics reported their findings in the journal Physical Review Applied.
A team of theoretical physicists at the University of Basel in Switzerland, has found a way to design a fully connected quantum optimizer -- a machine that holds the promise to speed up the solution of hard optimization problems -- by taking advantage of a fundamental property of the superconducting state of matter. In a further vital step towards building a quantum optimizer able to solve real world problems, they also show that this new architecture is more robust to noise than existing alternatives. Their work has been published in Science Advances.
Surfaces that have been coated with rare earth oxides develop water-repelling properties only after contact with air. Even at room temperature, chemical reactions begin with hydrocarbons in the air. In the journal Scientific Reports, researchers from the University of Basel, the Swiss Nanoscience Institute and the Paul Scherrer Institute report that it is these reactions that are responsible for the hydrophobic effect.
Prof. Patrick Maletinsky holds the Georg-H.-Endress-position as an Assistant Professor at the Department of Physics of the University of Basel since February 2012. He has been promoted by the university council to associate professor effective February 1st, 2017.
Researchers from the Particles & Cosmology group at the Department of Physics have found that in the early universe after inflation, so-called oscillons can act as "gravitational wave factories" and produce much more gravitational waves than previously thought. Oscillons are localized and strong scalar field fluctuations that are comparatively long-lived. Numerical simulations showed that the produced gravitational waves have a specific frequency, related to the underlying theory of the early universe, and manifest themselves as a pronounced peak in the otherwise rather broad spectrum of gravitational waves from early universe dynamics. If this peak is in the right frequency range, the effects from the oscillons can be observed by the running or planned gravitational wave detectors, e.g. by the aLIGO-AdVirgo detector network. The detection of such a gravitational wave signal would provide a fascinating window into the physics of the early universe. The results are published in Physical Review Letters.