110 citations · 365 across the 18 of their papers we have counts for
18 papers
-symmetric circuit-QED
Fernando Quijandría, Uta Naether, Sahin K. Özdemir +2
The Hermiticity axiom of quantum mechanics guarantees that the energy spectrum is real and the time evolution is unitary (probability-preserving). Nevertheless, non-Hermitian but $…
Compactification tuning for nonlinear localized modes in sawtooth lattices
Magnus Johansson, Uta Naether, Rodrigo A. Vicencio
We discuss the properties of nonlinear localized modes in sawtooth lattices, in the framework of a discrete nonlinear Schrödinger model with general on-site nonlinearity. Analytic…
Stationary discrete solitons in circuit QED
Uta Naether, Fernando Quijandría, Juan José García-Ripoll +1
We demonstrate that stationary localized solutions (discrete solitons) exist in a one dimensional Bose-Hubbard lattices with gain and loss in the semiclassical regime. Stationary s…
Nanometric constrictions in superconducting coplanar waveguide resonators
Mark David Jenkins, Uta Naether, Miguel Ciria +7
We report on the design, fabrication and characterization of superconducting coplanar waveguide resonators with nanoscopic constrictions. By reducing the size of the center line do…
Random dimer model in pseudo two-dimensional lattices
Uta Naether, Cristian Mejía-Cortés, Rodrigo A. Vicencio
In this work, we study long-time wave transport in correlated and uncorrelated disordered 2D arrays. When a separation of dimensions is applied to the model, we find that the predi…
Analytical model for waveguide light propagation and applications
Santiago Rojas Rojas, Luis Morales-Inostroza, Uta Naether +6
We study the polarization properties of elliptical femtosecond-laser-written waveguides arrays. A new analytical model is presented to explain the asymmetry of the spatial transver…
The Bose Hubbard model with squeezed dissipation
Fernando Quijandría, Uta Naether, Diego Porras +2
The stationary properties of the Bose-Hubbard model under squeezed dissipation are investigated. The dissipative model does not possess a symmetry, but parity is conserved:…
Quantum chaos in an ultra-strongly coupled bosonic junction
Uta Naether, Juan José García-Ripoll, Juan José Mazo +1
The classical and quantum dynamics of two ultra-strongly coupled and weakly nonlinear resonators cannot be explained using the Discrete Nonlinear Schrödinger Equation or the Bose-H…
From Josephson junction metamaterials to tunable pseudo-cavities
D. Zueco, C. Fernández-Juez, J. Yago +4
The scattering through a Josephson junction interrupting a superconducting line is revisited including power leakage. We discuss also how to make tunable and broadband resonant mir…
Self-trapping transition in nonlinear cubic lattices
Uta Naether, Alejandro J. Martínez, Diego Guzmán-Silva +2
We explore the fundamental question of the critical nonlinearity value needed to dynamically localize energy in discrete nonlinear cubic (Kerr) lattices. We focus on the effective…
Multi-stable regime and intermediate solutions in a nonlinear saturable coupler
Diego Guzmán-Silva, Cibo Lou, Uta Naether +3
We show, theoretically and experimentally, the existence of a multi-stable regime in a nonlinear saturable coupler. In spite of its simplicity, we found that this model shows gener…
Expansion of a wave-packet in lattices with disorder and nonlinearity
Uta Naether, Santiago Rojas-Rojas, Alejandro J. Martinez +6
We show, theoretically and experimentally, the counterintuitive result that an increase of disorder can result in an enhanced spreading of an initially localized excitation. Moreov…
Observation of the gradual transition from one-dimensional to two-dimensional Anderson localization
U. Naether, Y. V. Kartashov, V. A. Vysloukh +4
We study the gradual transition from one-dimensional to two-dimensional Anderson localization upon transformation of the dimensionality of disordered waveguide arrays. An effective…
Nonlinear localized modes in Glauber-Fock photonic lattices
Alejandro J. Martínez, Uta Naether, Alexander Szameit +1
We study a nonlinear Glauber-Fock lattice and the conditions for the excitation of localized structures. We investigate the particular linear properties of these lattices, includin…
Mobility of high-power solitons in saturable nonlinear photonic lattices
Uta Naether, Rodrigo A. Vicencio, Milutin Stepić
We theoretically study the properties of one-dimensional nonlinear saturable photonic lattices exhibiting multiple mobility windows for stationary solutions. The effective energy b…
Fano resonances in magnetic metamaterials
Uta Naether, Mario I. Molina
We study the scattering of magnetoinductive plane waves by internal (external) capacitive (inductive) defects coupled to a one-dimensional split-ring resonator array. We examine a…
Peierls-Nabarro energy surfaces and directional mobility of discrete solitons in two-dimensional saturable nonlinear Schrödinger lattices
Uta Naether, Rodrigo A. Vicencio, Magnus Johansson
We address the problem of directional mobility of discrete solitons in two-dimensional rectangular lattices, in the framework of a discrete nonlinear Schrödinger model with saturab…
Fano resonances in saturable waveguide arrays
Uta Naether, Daniel E. Rivas, Manuel A. Larenas +2
We study a waveguide array with an embedded nonlinear saturable impurity. We solve the impurity problem in closed form and find the nonlinear localized modes. Next, we consider the…