Conductance transition with interacting bosons in an Aharonov-Bohm cage
We study the transport of interacting bosons through an Aharonov-Bohm cage—a building
block of flat-band networks—with coherent pump and sink leads. In the absence of …
block of flat-band networks—with coherent pump and sink leads. In the absence of …
Critical state generators from perturbed flatbands
One-dimensional all-bands-flat lattices are networks with all bands being flat and highly
degenerate. They can always be diagonalized by a finite sequence of local unitary …
degenerate. They can always be diagonalized by a finite sequence of local unitary …
All-optical switching at the two-photon limit with interference-localized states
We propose a single-photon-by-single-photon all-optical switch concept based on
interference-localized states on lattices and their delocalization by interaction. In its “open” …
interference-localized states on lattices and their delocalization by interaction. In its “open” …
Transport of interacting particles through a flat Bloch band: superconductivity and all-optical switching
V Pyykkönen - 2024 - aaltodoc.aalto.fi
In lattice models, destructive interference can lead to formation of localized states, which
results in Bloch bands with a constant dispersion, called flat bands. Flat-band systems give a …
results in Bloch bands with a constant dispersion, called flat bands. Flat-band systems give a …