Now showing items 1-4 of 4

    • Bulk detection of time-dependent topological transitions in quenched chiral models 

      D'Errico, Alessio; Barboza, Raouf; Dauphin, Alexandre; Lewenstein, Maciej; Massignan, Pietro Alberto; Marrucci, Lorenzo; Cardano, Filippo; Di Colandrea, Francesco (American Physical Society, 2020-05)
      Article
      Open Access
      The topology of one-dimensional chiral systems is captured by the winding number of the Hamiltonian eigenstates. Here we show that this invariant can be read out by measuring the mean chiral displacement of a single-particle ...
    • 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 ...
    • 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 ...