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Showing 1–10 of 10 results
Advanced filters: Author: Tilman Pfau Clear advanced filters

  • Plasmonic nanostructures enable the concentration of large electric fields into small spaces. The classical analogue of electromagnetically induced transparency has now been achieved in such devices, leading to a narrow resonance in their absorption spectrum. This combination of high electric-field concentration and sharp resonance offers a pathway to ultracompact sensors with extremely high sensitivity.

    • Na Liu
    • Lutz Langguth
    • Harald Giessen
    Research
    Nature Materials
    Volume: 8, P: 758-762

  • The ability to harness the Faraday effect on a short timescale in an ensemble of hot atoms may prove useful as a read-out tool for quantum information based on microscale vapour cells.

    • Robert Löw
    • Tilman Pfau
    News & Views
    Nature Photonics
    Volume: 3, P: 197-199

  • A study reports on the observation of a new type of molecular bond between an ion and a Rydberg atom and characterizes the resulting molecule using an ion microscope study.

    • Nicolas Zuber
    • Viraatt S. V. Anasuri
    • Tilman Pfau
    Research
    Nature
    Volume: 605, P: 453-456

  • WebSpontaneous translational symmetry breaking is experimentally observed in a dipolar Bose–Einstein condensate of dysprosium atoms, whereby an instability causes a spontaneous transition from an unstructured superfluid to an ordered arrangement of droplet crystals, which is surprisingly long-lived.

    • Holger Kadau
    • Matthias Schmitt
    • Tilman Pfau
    Research
    Nature
    Volume: 530, P: 194-197

  • A Rydberg atom has one electron excited into an orbital with a very high principal quantum number. The scattering of such an electron from a second atom in the ground state gives rise to long-range bonding, yielding giant molecules with internuclear separations reaching several thousand Bohr radii. Using s-state rubidium Rydberg atoms with quantum numbers between 34 and 40, Bendkowsky and colleagues have now spectroscopically characterized such 'Rydberg molecules', and measured their lifetimes and polarizabilities.

    • Vera Bendkowsky
    • Björn Butscher
    • Tilman Pfau
    Research
    Nature
    Volume: 458, P: 1005-1008

  • This paper reports the realization of a chromium Bose-Einstein condensate (BEC) with strong anisotropic magnetic dipole–dipole interaction between the atoms, which induces a pronounced change of the aspect ratio of the cloud. The experiment opens the way for exploration of the unique properties of quantum ferrofluids.

    • Thierry Lahaye
    • Tobias Koch
    • Tilman Pfau
    Research
    Nature
    Volume: 448, P: 672-675

  • Atoms can be used as highly sensitive magnetic-field sensors. By exploiting the effects of electric fields on the optical transitions of excited Rydberg states, it is now demonstrated that it is also possible to probe very weak microwave electric fields with atoms.

    • Jonathon A. Sedlacek
    • Arne Schwettmann
    • James P. Shaffer
    Research
    Nature Physics
    Volume: 8, P: 819-824

  • Observation of the collective mode responding to the superfluid stiffness—the low-energy Goldstone mode—provides direct evidence for phase rigidity, which is a key signature of supersolidity in an ultracold quantum gas.

    • Mingyang Guo
    • Fabian Böttcher
    • Tilman Pfau
    Research
    Nature
    Volume: 574, P: 386-389