632 citations · 1.8k across the 10 of their papers we have counts for
10 papers
Observation of Local Symmetry in a Photonic System
Nora Schmitt, Steffen Weimann, Christian V. Morfonios +4
The concept of local symmetry is a powerful tool in predicting complex transport phenomena in aperiodic media. A nonlocal continuity formalism reveals how local symmetries are enco…
Photonic Topological Insulator in Synthetic Dimensions
Eran Lustig, Steffen Weimann, Yonatan Plotnik +4
Topological phases enable protected transport along the edges of materials, offering immunity against scattering from disorder and imperfections. These phases were suggested and de…
Transport in Sawtooth photonic lattices
Steffen Weimann, Luis Morales-Inostroza, Bastián Real +3
We investigate, theoretically and experimentally, a photonic realization of a Sawtooth lattice. This special lattice exhibits two spectral bands, with one of them experiencing a co…
Measuring the Aharonov-Anandan phase in photonics
Kai Wang, Steffen Weimann, Armando Perez-Leija +1
The Aharonov-Anandan phase is a description of the geometric nature in non-adiabatic cyclic evolutions of quantum states. Here we report on a measurement of the Aharonov-Anandan ph…
Implementation of Quantum and Classical Discrete Fractional Fourier Transforms
Steffen Weimann, Armando Perez-Leija, Maxime Lebugle +9
Fourier transforms are ubiquitous mathematical tools in basic and applied sciences. We here report classical and quantum optical realizations of the discrete fractional Fourier tra…
Observation of bound states in Lieb photonic lattices
Rodrigo A. Vicencio, Camilo Cantillano, Luis Morales-Inostroza +4
We present the first experimental demonstration of a new type of bound states in the continuum, namely, compacton-like linear states in flat bands lattices. To this end, photonic L…
Impact of loss on the wave dynamics in photonic waveguide lattices
M. Golshani, S. Weimann, Kh. Jafari +6
We analyze the impact of loss in lattices of coupled optical waveguides and find that in such case, the hopping between adjacent waveguides is necessarily complex. This results not…
Observation of asymmetric solitons in waveguide arrays with refractive index gradient
Steffen Weimann, Yaroslav V. Kartashov, Victor A. Vysloukh +2
We study light propagation in waveguide arrays made in Kerr nonlinear media with a transverse refractive index gradient, and we find that the presence of the refractive index gradi…
Experimental observation of bulk and edge transport in photonic Lieb lattices
D. Guzman-Silva, C. Mejia-Cortes, M. A. Bandres +6
We analyze the transport of light in the bulk and at the edge of photonic Lieb lattices, whose unique feature is the existence of a flat band representing stationary states in the…
Compact surface Fano states embedded in the continuum of waveguide arrays
Steffen Weimann, Yi Xu, Robert Keil +5
We describe theoretically and observe experimentally the formation of a surface state in a semi-infnite waveguide array with side-coupled waveguide, designed to simultaneously achi…