Sökning: "Rydberg states"

Visar resultat 1 - 5 av 32 avhandlingar innehållade orden Rydberg states.

  1. 1. Nonlocal Correlations in Density Functional Theory

    Författare :Henrik Rydberg; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; bonding; GGA; adhesion; graphene; DFT; exchange; adsorption; LDA; first principles; polarization; vdW; determinants; correlation; graphite; surface states; van der Waals; density-functional theory; physisorption; nonlocal; functional;

    Sammanfattning : In Density Functional Theory, the widely used local and semilocal approximations to the exchange-correlation energy, the local density approximation (LDA) and the generalized gradient approximations (GGAs), lack a physical description of truly nonlocal correlation effects, which are absolutely essential for a proper description of soft matter. A scheme is proposed that provides a basis for systematic improvements beyond LDA and GGA, including correlations at intermediate and long range, giving rise to bonds of pure van der Waals type as well as more intricate, intermediate-range correlation bonds. LÄS MER

  3. 2. Multi-robot Information Fusion : Considering spatial uncertainty models

    Författare :Lars Andersson; Karl-Erik Rydberg; Aarne Halme; Linköpings universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : The work presented in this thesis covers the topic of deployment for mobile robot teams. By connecting robots in teams they can perform a better job than each individual is capable of. It also gives redundancy, increases robustness, provides scalability, and increases efficiency. LÄS MER

  4. 3. Applications of motional control in trapped Rydberg ion experiments

    Författare :Harry Parke; Markus Hennrich; Matthias Keller; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; trapped Rydberg ions; ion trapping; motional control of trapped ions; Rydberg; Physics; fysik;

    Sammanfattning : Trapped ion systems are one of the leading technologies for the development of various novel quantum devices, including computers, simulators and enhanced sensors. Ion traps offer a high level of control in terms of both the electronic and motional states of individual quantum systems. LÄS MER

  5. 4. Properties of Rydberg matter studied by photon-matter interactions using lasers

    Författare :Shahriar Badiei; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Rydberg matter clusters; Rydberg states; Time-of-flight; Coulomb explosion; multiphoton ionization; stimulated emission;

    Sammanfattning : .... LÄS MER

  7. 5. A single trapped Rydberg ion

    Författare :Gerard Higgins; Markus Hennrich; Tilman Pfau; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Trapped ions; Rydberg physics; quantum information platforms; atomic physics; fysik; Physics;

    Sammanfattning : Systems of trapped ions and systems of ultracold Rydberg atoms are used at the forefront of quantum physics research and they make strong contenders as platforms for quantum technologies. Trapped Rydberg ions are a new hybrid technology envisaged to have both the exquisite control of trapped ion systems and the strong interactions of Rydberg atoms. LÄS MER