9 citations · 38 across the 10 of their papers we have counts for
10 papers
Geometrical control of topology with orbital angular momentum modes
Yunjia Zhai, Anselmo M. Marques, Ricardo G. Dias +2
We study how the topological properties of a one-dimensional staggered lattice, loaded into states with orbital angular momentum , can be controlled simply by tuning the relat…
Robust certification of high-dimensional quantum devices
Javier Fernández, Albert Rico, David Viedma +6
Certifying quantum behavior from classically accessible data is essential for secure communication and scalable quantum technologies. While powerful certification methods such as B…
Exceptional horns in -root graphene and Lieb photonic ring lattices
A. M. Marques, D. Viedma, V. Ahufinger +1
We present a systematic construction of non-Hermitian tight-binding lattices whose Bloch spectra are th roots of those of Hermitian parent two-dimensional (2D) lattices, namely…
Flux-mediated effective Su-Schrieffer-Heeger model in an impurity decorated diamond chain
David Viedma, Anselmo M. Marques, Ricardo G. Dias +1
In flat-band systems with non-orthogonal compact localized states (CLSs), onsite perturbations couple neighboring CLSs and generate exponentially-decaying impurity states, whose de…
Impurity flat band states in the diamond chain
Anselmo M. Marques, David Viedma, Verònica Ahufinger +1
Flat band (FB) systems, featuring dispersionless energy bands, have garnered significant interest due to their compact localized states (CLSs). However, a detailed account on how l…
Topological -root Su-Schrieffer-Heeger model in a non-Hermitian photonic ring system
David Viedma, Anselmo M. Marques, Ricardo G. Dias +1
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…
Mode pumping in photonic lattices using a single tailored auxiliary waveguide
David Viedma, Jordi Mompart, Verònica Ahufinger
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…
High Efficiency Topological Pumping with Discrete Supersymmetry Transformations
David Viedma, Gerard Queraltó, Jordi Mompart +1
Making use of the isospectrality of Supersymmetry transformations, we propose a general and high-fidelity method to prepare gapped topological modes in discrete systems from a sing…
Supersymmetry-enhanced Stark-Chirped Rapid-Adiabatic-Passage in multimode optical waveguides
David Viedma, Verònica Ahufinger, Jordi Mompart
We propose a method to efficiently pump an excited mode of a multimode optical waveguide starting from a fundamental-mode input by combining Stark-Chirped Rapid Adiabatic Passage (…
Effective self-similar expansion of a Bose-Einstein condensate: Free space vs confined geometries
David Viedma, Michele Modugno
We compare the exact evolution of an expanding three-dimensional Bose-Einstein condensate with that obtained from the effective scaling approach introduced in D. Guéry-Odelin [Phys…