Now showing items 1-5 of 5

    • Photonic band gap via quantum coherence in vortex lattices of Bose-Einstein condensates 

      Müstecaplioǧlu, O. E.; Oktel, M. Ö. (The American Physical Society, 2005)
      We investigate the optical response of an atomic Bose-Einstein condensate with a vortex lattice. We find that it is possible for the vortex lattice to act as a photonic crystal and create photonic band gaps, by enhancing ...
    • Quantum gases in rotating optical lattices 

      Umucalılar, Rifat Onur (Bilkent University, 2010)
      The thesis is structured into two main parts so as to cover bosons and fermions in rotating optical lattices separately. In the first part, after a brief introduction to ultracold atoms in optical lattices, we review the ...
    • Refractive index-enhanced vortex lattices 

      Müstecaplıoǧlu, Ö. E.; Öktel, M. Özgür (SPIE, 2005)
      Light propagation through vortex matter in atomic Bose-Einstein condensates is examined. It is shown that vortex matter can be used as a photonic crystal by a refractive index enhancement scheme. Band structure of the ...
    • Tkachenko modes of the square vortex lattice in a two-component Bose-Einstein condensate 

      Keçeli, Murat; Öktel, M. Özgür (2006)
      We study Tkachenko modes of the square vortex lattice of a two-component Bose-Einstein condensate (BEC) in the mean-field quantum Hall regime, considering the coupling of these modes with density excitations. We derive the ...
    • A variational approech to stationary and rotating Bose-Einstein condensates 

      Keçeli, Murat (Bilkent University, 2006)
      After the experimental demonstration of Bose-Einstein condensation (BEC) in alkali gases [6, 7, 18], the number of theoretical and experimental papers on ultracold atomic physics increased enormously [48]. BEC experiments ...