Search for dissertations about: "optical lattices"

Showing result 6 - 10 of 19 swedish dissertations containing the words optical lattices.

  2. 6. Laser cooling mechanisms and Brownian motors in optical lattices

    Author : Peder Sjölund; Anders Kastberg; Svante Jonsell; Chris Westbrook; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Optical physics; Optisk fysik;

    Abstract : Denna avhandling innefattar såväl experimentella som numeriska studier av laserkylda atomer i optiska kristallgitter. Bland annat har laserkylningsprocesser studerats, där atomers rörelser i optiska kristallgitter har uppvisat andra typer av bakomliggande mekanismer än de som tidigare förutsågs genom “Sisyfoskylningsmodellen”. READ MORE

  4. 7. Laser cooling in single and double optical lattices

    Author : Johan Jersblad; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Optik;

    Abstract : .... READ MORE

  5. 8. Experimental Investigation of Three-Dimensional Single and Double optical Lattices

    Author : Harald Ellmann; Poul Jessen; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : A complete laser cooling setup was built, with focus on threedimensional near-resonant optical lattices for cesium. These consist of regularly ordered micropotentials, created by the interference of four laser beams. One key feature of optical lattices is an inherent ”Sisyphus cooling” process. READ MORE

  6. 9. Experimental and Numerical Investigations of Ultra-Cold Atoms

    Author : Magnus Rehn; Anders Kastberg; Claude Dion; Matti Kaivola; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Ultracold atoms; optical lattices; Bose-Einstein condensation; quantum phase transitions; Physics; Fysik;

    Abstract : I have been one of the main responsible for building a new laboratory for Bose-Einstein condensation with 87Rb. In particular, the experimental setup has been designed for performing experiments with Bose-Einstein condensates load into optical lattices of variable geometries. All parts essential for Bose-Einstein condensation are in place. READ MORE

  7. 10. Numerical studies of spin chains and cold atoms in optical lattices

    Author : Sara Bergkvist Sylvan; Anders Rosengren; Richard Scalettar; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Teoretisk Fysik; Kondenserade materiens teori; Condensed matter physics; Kondenserade materiens fysik;

    Abstract : An important, but also difficult, research field in condensed matter physics is that of strongly correlated systems. This thesis considers two topics in this field. The first topic is disorder and frustration in spin models. The introduction of disorder into quantum spin chains creates a complex problem. READ MORE