Zobrazeno 1 - 10
of 117
pro vyhledávání: '"Ahufinger, Verònica"'
In flat-band systems with non-orthogonal compact localized states (CLSs), onsite perturbations couple neighboring CLSs and generate exponentially-decaying impurity states, whose degree of localization depends on lattice parameters. In this work, a di
Externí odkaz:
http://arxiv.org/abs/2407.15789
Flat band (FB) systems, i.e., models hosting dispersionless bands in their energy spectrum, have attracted great interest recently. The eigenstates of these FBs can be written as compact localized states (CLSs), meaning states having finite support o
Externí odkaz:
http://arxiv.org/abs/2407.14405
Autor:
Beige, Almut, Predojević, Ana, Metelmann, Anja, Sanpera, Anna, Macchiavello, Chiara, Koch, Christiane P., Silberhorn, Christine, Toninelli, Costanza, Bruß, Dagmar, Ercolessi, Elisa, Paladino, Elisabetta, Ferlaino, Francesca, Ferrini, Giulia, Platero, Gloria, Fuentes, Ivette, Nemoto, Kae, Tarruell, Leticia, Bondani, Maria, Chiofalo, Marilu, Pons, Marisa, D'Angelo, Milena, Murao, Mio, Fabbri, Nicole, Verrucchi, Paola, Senellart-Mardon, Pascale, Citro, Roberta, Zambrini, Roberta, González-Férez, Rosario, Maniscalco, Sabrina, Huelga, Susana, Mehlstäubler, Tanja, Parigi, Valentina, Ahufinger, Verónica
Data show that the presence of women in quantum science is affected by a number of detriments and their percentage decreases even further for higher positions. Beyond data, from our shared personal experiences as female tenured quantum physics profes
Externí odkaz:
http://arxiv.org/abs/2407.02612
Publikováno v:
Nanophotonics 13(1), 51-61 (2024)
Square-root topology is one of the newest additions to the ever expanding field of topological insulators (TIs). It characterizes systems that relate to their parent TI through the squaring of their Hamiltonians. Extensions to $2^n$-root topology, wh
Externí odkaz:
http://arxiv.org/abs/2307.16855
We demonstrate that a complete class of flat-band lattices with underlying commutative local symmetries exhibit a locally fragmented Hilbert space. The equitable partition theorem ensures distinct parities for the compact localized states (CLSs) pres
Externí odkaz:
http://arxiv.org/abs/2306.15660
We study the topological properties of interacting and non-interacting bosons loaded in the orbital angular momentum states $l=1$ in a lattice of rings with alternating distances. At the single-particle level, the two circulation states within each s
Externí odkaz:
http://arxiv.org/abs/2305.07008
Publikováno v:
Phys. Rev. A 107, 013707 (2023)
In this work, we use the quantum-jump approach to study light-matter interactions in a four-level scheme giving rise to frequency up-conversion amplification without inversion (AWI). The results obtained apply to the case of neutral Hg vapour where,
Externí odkaz:
http://arxiv.org/abs/2301.06214
Publikováno v:
Phys. Rev. A, 107, 023506 (2023)
In this work, we propose a completely general method to pump the gapped topological modes of a lattice of optical waveguides by controlling the propagation constant of an auxiliary waveguide and its coupling to the main lattice. In this way, we can t
Externí odkaz:
http://arxiv.org/abs/2211.08855
We study Bose-Hubbard models in a family of diamond necklace lattices with $n$ central sites. The single-particle spectrum of these models presents compact localized states (CLSs) that occupy the up and down sites of each diamond. By performing an ap
Externí odkaz:
http://arxiv.org/abs/2210.02429
We study a system of a few ultracold bosons loaded into the states with orbital angular momentum $l=1$ of a one-dimensional staggered lattice of rings. Local eigenstates with winding numbers $+l$ and $-l$ form a Creutz ladder with a real dimension an
Externí odkaz:
http://arxiv.org/abs/2209.09183