Exploració per tema "Anderson localization"

Ara es mostren els items 1-8 de 8

    • Anderson localization in Bragg-guiding arrays with negative defects 

      Lobanov, Valery E.; Kartashov, Yaroslav V.; Vysloukh, Victor A.; Torner Sabata, Lluís (2012-10)
      Article
      Accés restringit per política de l'editorial
      We show that Anderson localization is possible in waveguide arrays with periodically spaced defect waveguides having a lower refractive index. Such localization is mediated by Bragg reflection, and it takes place even if ...

    • Anderson localization of light with topological dislocations 

      Lobanov, Valery E.; Kartashov, Yaroslav V.; Vysloukh, Victor A.; Torner Sabata, Lluís (2013-11-01)
      Article
      Accés obert
      We predict Anderson localization of light with nested screw topological dislocations propagating in disordered two-dimensional arrays of hollow waveguides illuminated by vortex beams. The phenomenon manifests itself in the ...

    • Applications of machine learning to studies of quantum phase transitions 

      Malo Roset, Laura (Universitat Politècnica de Catalunya, 2019-09-06)
      Projecte Final de Màster Oficial
      Accés obert
      In the past years Machine Learning has shown to be a useful tool in quantum many-body physics to detect phase transitions. Being able to identify phases via machine learning introduces the question of how did the algorithm ...

    • Disorder and localization in ultracold quantum gases 

      Olivella Eritja, Laura Laia (Universitat Politècnica de Catalunya, 2020-10-22)
      Projecte Final de Màster Oficial
      Accés obert
      In this work we study Anderson localization of quantum states in different kind of disordered media. First we apply the recently-developed theory of \textit{landscape localization} pioneered by Filoche and Mayboroda, giving ...

    • Hybrid bloch-anderson localization of light 

      Stützer, Simon; Kartashov, Yaroslav V.; Vysloukh, Victor A.; Konotop, Vladimir V; Nolte, Stefan; Torner Sabata, Lluís; Szameit, Alexander (2013-04-26)
      Article
      Accés restringit per política de l'editorial
      We investigate the interplay of Bloch oscillations and Anderson localization in optics. Gradual washing out of Bloch oscillations and the formation of nearly stationary averaged intensity distributions, which are symmetric ...

    • Luttinger-liquid behavior of one-dimensional He-3 

      Astrakharchik, Grigori; Boronat Medico, Jordi (2014-12-30)
      Article
      Accés obert
      The ground-state properties of one-dimensional He-3 are studied using quantum Monte Carlo methods. The equation of state is calculated in a wide range of physically relevant densities and is well interpolated by a power-series ...

    • One dimensional H-1, H-2 and H-3 

      Vidal, A.J.; Astrakharchik, Grigori; Vranješ Markic, Leandra; Boronat, J. (2016-05-26)
      Article
      Accés obert
      The ground-state properties of one-dimensional electron-spin-polarized hydrogen H-1, deuterium H-2, and tritium 3 Hare obtained by means of quantum Monte Carlo methods. The equations of state of the three isotopes are ...

    • Suppression and restoration of disorder-induced light localization mediated by PT-symmetry breaking 

      Kartashov, Yaroslav V.; Hang, Chao; Konotop, Vladimir V; Vysloukh, Victor A.; Huang, Guoxiang; Torner Sabata, Lluís (2016-01-12)
      Article
      Accés obert
      We uncover that the breaking point of the PT-symmetry in optical waveguide arrays has a dramatic impact on light localization induced by the off-diagonal disorder. Specifically, when the gain/loss control parameter approaches ...