306 citations · 2.1k across the 48 of their papers we have counts for
46 papers
Chains of nanoparticles for flat-band emission and lasing
Rebecca Heilmann, Joel Lehikoinen, Sioneh Eyvazi +2
Controlling light-matter interactions is central to photonic technologies ranging from lasers to optical information processing. Suitably designed photonic structures give rise to…
Conductivity in flat bands from the Kubo-Greenwood formula
Kukka-Emilia Huhtinen, Päivi Törmä
Conductivity in a multiband system can be divided into intra- and interband contributions, and the latter further into symmetric and antisymmetric parts. In a flat band, intraband…
Magnetic on-off switching of a plasmonic laser
Francisco Freire-Fernández, Javier Cuerda, Konstantinos S. Daskalakis +5
The nanoscale mode volumes of surface plasmon polaritons have enabled plasmonic lasers and condensates with ultrafast operation. Most plasmonic lasers are based on noble metals, re…
Quantum geometry and flat band Bose-Einstein condensation
Aleksi Julku, Georg M. Bruun, Päivi Törmä
We study the properties of a weakly interacting Bose-Einstein condensate (BEC) in a flat band lattice system by using multiband Bogoliubov theory, and discover fundamental connecti…
Flat band transport and Josephson effect through a finite-size sawtooth lattice
Ville A. J. Pyykkönen, Sebastiano Peotta, Philipp Fabritius +3
We study theoretically the transport through a finite-size sawtooth lattice coupled to two fermionic reservoirs kept in the superfluid state. We focus on the DC Josephson effect an…
Polarization and phase textures in lattice plasmon condensates
Jani M. Taskinen, Pavel Kliuiev, Antti J. Moilanen +1
Polarization textures of light may reflect fundamental phenomena such as topological defects, and can be utilized in engineering light beams. Three main routes are applied during t…