36 citations · 180 across the 14 of their papers we have counts for
13 papers · 1 filter
Solitons in a photonic nonlinear quantum walk: lessons from the continuum
Andreu Anglés-Castillo, Armando Pérez, Eugenio Roldán
We analyse a nonlinear QW model which can be experimentally implemented using the components of the electric field on an optical nonlinear Kerr medium, which translates into a rota…
Two-particle coined-quantum walk with long-range interaction
César Alonso-Lobo, Manuel Martínez-Quesada, Margarida Hinarejos +2
We present and study a two-particle quantum walk on the line in which the two particles interact via a long-range Coulombian-like interaction. We obtain the spectrum of the system…
Light polarization measurements in tests of macrorealism
Eugenio Roldán, Johannes Kofler, Carlos Navarrete-Benlloch
According to the world view of macrorealism, the properties of a given system exist prior to and independent of measurement, which is incompatible with quantum mechanics. Leggett a…
Spatial localization and pattern formation in discrete optomechanical cavities and arrays
J. Ruiz-Rivas, G. Patera, C. Navarrete-Benlloch +2
We investigate theoretically the generation of nonlinear dissipative structures in optomechanical (OM) systems containing discrete arrays of mechanical resonators. We consider both…
Quantum walk on a cylinder
Luis A. Bru, Germán J. de Valcárcel, Giuseppe Di Molfetta +3
We consider the 2D alternate quantum walk on a cylinder. We concentrate on the study of the motion along the open dimension, in the spirit of looking at the closed coordinate as a…
Electric quantum walks in two dimensions
Luis A. Bru, Margarida Hinarejos, Fernando Silva +2
We study electric quantum walks in two dimensions considering Grover, Alternate, Hadamard, and DFT quantum walks. In the Grover walk the behaviour under an electric field is easy t…
Understanding and controlling N-dimensional quantum walks via dispersion relations. Application to the 2D and 3D Grover walks: Diabolical points and more
Germán J. de Valcárcel, Margarida Hinarejos, Eugenio Roldán +2
The discrete quantum walk in N dimensions is analyzed from the perspective of its dispersion relations. This allows understanding known properties, as well as designing new ones wh…
N-dimensional alternate coined quantum walks from a dispersion relation perspective
Eugenio Roldán, Carlo Di Franco, Fernando Silva +1
We propose an alternative definition of an N-dimensional coined quantum walk by generalizing a recent proposal [Di Franco et al., Phys. Rev. Lett. 106, 080502 (2011)]. This N-dimen…
A semiclassical optics derivation of Einstein's rate equations
Robert Hoeppner, Germán J. de Valcárcel, Eugenio Roldán
We provide a semiclassical optics derivation of Einstein's rate equations (ERE) for a two-level system illuminated by a broadband light field, setting a limit for their validity th…
Tailoring discrete quantum walk dynamics via extended initial conditions: Towards homogeneous probability distributions
Germán J. de Valcárcel, Eugenio Roldán, Alejandro Romanelli
We study the evolution of initially extended distributions in the coined quantum walk on the line by analyzing the dispersion relation of the process and its associated wave equati…
Squeezing via spontaneous rotational symmetry breaking in a four-wave mixing cavity
Ferran V. Garcia-Ferrer, Carlos Navarrete-Benlloch, Germán J. de Valcárcel +1
We predict the generation of noncritically squeezed light through the spontaneous rotational symmetry breaking occurring in a Kerr cavity. The model considers a cavity th…
Non-critical squeezing in 2-transverse-mode optical parametric oscillators
Carlos Navarrete-Benlloch, Alejandro Romanelli, Eugenio Roldán +1
In this article we explore the quantum properties of a degenerate optical parametric oscillator when it is tuned to the first family of transverse modes at the down converted frequ…
Generating highly squeezed Hybrid Laguerre-Gauss modes in large-Fresnel-number Degenerate Optical Parametric Oscillators
Carlos Navarrete-Benlloch, Germán J. de Valcárcel, Eugenio Roldán
We theoretically describe the quantum properties of a large Fresnel number degenerate optical parametric oscillator with spherical mirrors that is pumped by a Gaussian beam. The re…