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Electric polarization and its quantization in one-dimensional non-Hermitian chains
Jinbing Hu, Carmine Antonio Perroni, Giulio De Filippis +3
We generalize the modern theory of electric polarization to the case of one-dimensional non-Hermitian systems with line-gapped spectrum. In these systems, the electronic position o…
Linking topological features of the Hofstadter model to optical diffraction figures
Francesco Di Colandrea, Alessio D'Errico, Maria Maffei +6
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 topologi…
Bloch-Landau-Zener dynamics induced by a synthetic field in a photonic quantum walk
Alessio D'Errico, Raouf Barboza, Rebeca Tudor +4
Quantum walks are processes that model dynamics in coherent systems. Their experimental implementations proved key to unveil novel phenomena in Floquet topological insulators. Here…
Bulk detection of time-dependent topological transitions in quenched chiral models
Alessio D'Errico, Francesco Di Colandrea, Raouf Barboza +5
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 m…
Detection of Zak phases and topological invariants in a chiral quantum walk of twisted photons
F. Cardano, A. D'Errico, A. Dauphin +9
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…
Entangling one polariton with a photon: effect of interactions on a single-polariton quantum state
Álvaro Cuevas, Blanca Silva, Juan Camilo López Carreño +16
Polaritons are quasi-particles originating from the coupling of light with matter that demonstrated quantum phenomena at the many-particle mesoscopic level, such as BEC and superfl…