La recerca d'avantguarda en les aplicacions de les ciències i tecnologies de la llum a diversos camps, amb èmfasi en la biofotònica, l'òptica quàntica i els fenòmens i dispositius de control de llum amb llum.

Recent Submissions

  • Topology Transitions of Anisotropy Induced Bound States in the Continuum 

    Mukherjee, Samyobrata; Gomis Bresco, Jordi; Pujol Closa, Maria del Pilar; Artigas García, David; Torner Sabata, Lluís (2018)
    Conference report
    Open Access
    We demonstrate that Bound states In the Continuum (BICs) are supported in planar anisotropic structures where the optic axes are arbitrarily oriented. Moreover, we reveal fundamental new topological properties of these ...
  • Existence loci of bound states in the continuum in the parameter space of anisotropic planar structures 

    Mukherjee, Samyobrata; Gomis Bresco, Jordi; Pujol Closa, Maria del Pilar; Artigas García, David; Torner Sabata, Lluís (Optical Society of American (OSA), 2019)
    Conference lecture
    Open Access
    Bound states in the continuum (BICs), first predicted in the field of quantum physics [1], are localized radiationless states existing in the part of the spectrum that corresponds to radiative modes. BICs are a general ...
  • Waveguide stopped light mediated by mode transitions 

    Pujol Closa, Maria del Pilar; Gomis Bresco, Jordi; Gomez Diaz, J. Sebastian; Artigas García, David (Optical Society of American (OSA), 2019)
    Conference lecture
    Open Access
    Hyperbolic metamaterials (HMMs) are uniaxial materials that have hyperbolic dispersion curves. There are two types of hyperbolic metamaterials, type I that is described by a permittivity tensor with e|| < 0 and e¿ > 0, and ...
  • Transition from Dirac points to exceptional points in anisotropic waveguides 

    Gomis Bresco, Jordi; Artigas García, David; Torner Sabata, Lluís (American Physical Society, 2019-10-04)
    Article
    Open Access
    We uncover the existence of Dirac and exceptional points in waveguides made of anisotropic materials, and study the transition between them. Dirac points in the dispersion diagram appear at propagation directions where the ...
  • Angular control of anisotropy-induced bound states in the continuum 

    Mukherjee, Samyobrata; Gomis Bresco, Jordi; Pujol Closa, Maria del Pilar; Artigas García, David; Torner Sabata, Lluís (2019-11-01)
    Article
    Open Access
    Radiation of leaky modes existing in anisotropic waveguides can be cancelled by destructive interference at special propagation directions relative to the optical axis orientation, resulting in fully bound states surrounded ...
  • Random number generation by coherent detection of quantum phase noise 

    Álvarez, Juan Rafael; Sarmiento Hernández, Samael; Lázaro Villa, José Antonio; Gené Bernaus, Joan M.; Pérez Torres, Juan (2020-02-17)
    Article
    Open Access
    In 2010 Qi et al. [Opt. Lett. 35(3), 312 (2010)] demonstrated a random number generator based on the drift of the phase of a laser due to spontaneous emission, The out-of-the-lab implementation of this scheme presents two ...
  • Localization and delocalization of light in photonic moiré lattices 

    Wang, Peng; Zheng, Yuanlin; Chen, Xianfeng; Huang, Changming; Kartashov, Yaroslav V.; Torner Sabata, Lluís; Konotop, Vladimir V.; Ye, Fangwei (Macmillan Publishers, 2020-01-02)
    Article
    Restricted access - publisher's policy
    Moiré lattices consist of two superimposed identical periodic structures with a relative rotation angle. Moiré lattices have several applications in everyday life, including artistic design, the textile industry, architecture, ...
  • Robust ultrashort light bullets in strongly twisted waveguide arrays 

    Milián, Carles; Kartashov, Yaroslav V.; Torner Sabata, Lluís (American Institute of Physics (AIP), 2019-09-27)
    Article
    Open Access
    We introduce a new class of stable light bullets that form in twisted waveguide arrays pumped with ultrashort pulses, where twisting offers a powerful knob to tune the properties of localized states. We find that, above a ...
  • Conformal transformation of Dyakonov surface waves into bound states of cylindrical metamaterials 

    Kajorndejnukul, Veerachart; Artigas García, David; Torner Sabata, Lluís (American Physical Society (APS), 2019-11-05)
    Article
    Open Access
    We put forward the use of transformation optics to map surface waves that exist as one-dimensional modes supported by anisotropic structures into bound states in two-dimensional geometries. Specifically, we show the conformal ...
  • Knotting fractional-order knots with the polarization state of light 

    Pisanty, Emilio; Jiménez Machado, Gerard; Vicuña Hernández, Verónica; Picón, Antonio; Celi, Alessio; Pérez Torres, Juan; Lewenstein, Maciej (2019-08-01)
    Article
    Open Access
    The fundamental polarization singularities of monochromatic light are normally associated with invariance under coordinated rotations: symmetry operations that rotate the spatial dependence of an electromagnetic field by ...
  • Temperature-controlled entangled-photon absorption spectroscopy 

    De León Montiel, J. Roberto; Svozilik, Jirí; Pérez Torres, Juan; U’Ren, Alfred B. (American Institute of Physics (AIP), 2019-07-09)
    Article
    Open Access
    Entangled two-photon absorption spectroscopy (TPA) has been widely recognized as a powerful tool for revealing relevant information about the structure of complex molecular systems. However, to date, the experimental ...
  • How to automate a kinematic mount using a 3D printed arduino-based system 

    Salazar Serrano, Luis Jose; Jiménez Machado, Gerard; Pérez Torres, Juan (2018-06-01)
    Article
    Open Access
    We demonstrate a simple, flexible and cost-effective system to automatize most of the kinematic mounts available nowadays on the market. It combines 3D-printed components, an Arduino board, stepper motors and simple ...

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