Now showing items 1-5 of 5

    • Detection of Zak phases and topological invariants in a chiral quantum walk of twisted photons 

      Cardano, Filippo; D'Errico, Alessio; dauphin, Alexandre; Maffei, Maria; Piccirillo, Bruno; de Lisio, Corrado; de Filippis, Guido; Cataudella, Vittorio; Santamato, Enrico; Marrucci, Lorenzo; Lewenstein, Maciej; Massignan, Pietro Alberto (2017)
      Article
      Open Access
      Topological insulators are fascinating states of matter exhibiting protected edge states and robust quantized features in their bulk. Here we propose and validate experimentally a method to detect topological properties ...
    • Observation of the topological Anderson insulator in disordered atomic wires 

      Meier, Eric J.; An, Fangzhao Alex; dauphin, Alexandre; Maffei, Maria; Massignan, Pietro Alberto; Hughes, Taylor L.; Gadway, Bryce (2018-11-23)
      Article
      Open Access
      Topology and disorder have a rich combined influence on quantum transport. In order to probe their interplay, we synthesized one-dimensional chiral symmetric wires with controllable disorder via spectroscopic Hamiltonian ...
    • Simulation and bulk detection of topological phases of matter 

      Maffei, Maria (Universitat Politècnica de Catalunya, 2019-01-29)
      Doctoral thesis
      Open Access
      Differently from the majority of the other phases of matter, which are characterized by local order parameters, the topological phases are characterized by integer or semi-integer numbers, the topological invariants, which ...
    • Topological characterization of chiral models through their long time dynamics 

      Maffei, Maria; dauphin, Alexandre; Cardano, Filippo; Lewenstein, Maciej; Massignan, Pietro Alberto (2018-01-16)
      Article
      Open Access
      We study chiral models in one spatial dimension, both static and periodically driven. We demonstrate that their topological properties may be read out through the long time limit of a bulk observable, the mean chiral ...
    • Two-dimensional topological quantum walks in the momentum space of structured light 

      Massignan, Pietro Alberto; D'Errico, Alessio; Cardano, Filippo; Maffei, Maria; dauphin, Alexandre; Esposito, Chiara; Piccirillo, Bruno; Marrucci, Lorenzo; Lewenstein, Maciej; Barboza, Raouf (Optical Society of American (OSA), 2020-02-20)
      Article
      Open Access
      Quantum walks are powerful tools for quantum applications and for designing topological systems. Although they are simulated in a variety of platforms, genuine two-dimensional realizations are still challenging. Here we ...