• 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)
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      Accés obert
      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)
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      Accés obert
      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 ...
    • Generation of tunable entanglement and violation of a Bell-like inequality between different degrees of freedom of a single photon 

      Vallés, Adam; Ambrosio, Vincenzo D'; Hendrych, Martin; Micuda, Micha; Marrucci, Lorenzo; Sciarrino, Fabio; Pérez Torres, Juan (American Physical Society, 2014-11-20)
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      Accés obert
    • Linking topological features of the Hofstadter model to optical diffraction figures 

      Di Colandrea, Francesco; D'Errico, Alessio; Maffei, Maria; Price, Hannah M; Lewenstein, Maciej; Marrucci, Lorenzo; Cardano, Filippo; Dauphin, Alexandre; Massignan, Pietro Alberto (2022-01-01)
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      Accés obert
      In two, three and even four spatial dimensions, the transverse responses experienced by a charged particle on a lattice in a uniform magnetic field are fully controlled by topological invariants called Chern numbers, which ...
    • 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
      Accés obert
      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 ...