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

  • Topological dipole Floquet solitons 

    Ivanov, Seergey K.; Kartashov, Yaroslav V.; Heinrich, Matthias; Szameit, Alexander; Torner Sabata, Lluís; Konotop, Vladimir V. (American Physical Society, 2021-05-11)
    Article
    Open Access
    We theoretically introduce a type of topological dipole soliton propagating in a Floquet topological insulator based on a kagome array of helical waveguides. Such solitons bifurcate from two edge states belonging to different ...
  • Reversible self-replication of spatiotemporal Kerr cavity patterns 

    Benadouda Ivars, Salim; Kartashov, Yaroslav V.; Torner Sabata, Lluís; Conejero Casares, José Alberto; Milian Enrique, Carles (American Institute of Physics (AIP), 2021-02-12)
    Article
    Open Access
    We uncover a novel and robust phenomenon that causes the gradual self-replication of spatiotemporal Kerr cavity patterns in cylindrical microresonators. These patterns are inherently synchronized multifrequency combs. Under ...
  • Quantum-inspired Fredkin gate based on spatial modes of light 

    Urrego González, Daniel Fernando; López Mago, Dorilian; Vicuña Hernández, Verónica; Pérez Torres, Juan (2020-04-27)
    Article
    Open Access
    Insights gained from quantum physics can inspire novel classical technologies. These quantum-inspired technologies are protocols that aim at mimicking particular features of quantum algorithms. They are generally easier ...
  • Optical coherence tomography with a nonlinear interferometer in the high parametric gain regime 

    Jiménez Machado, Gerard; Frascella, Gaetano; Pérez Torres, Juan; Chekhova, Maria (2020-08-31)
    Article
    Open Access
    We demonstrate optical coherence tomography based on an SU(1,1) nonlinear interferometer with high-gain parametric down-conversion. For imaging and sensing applications, this scheme promises to outperform previous experiments ...
  • Frequency-correlation requirements on the biphoton wave function in an induced-coherence experiment between separate sources 

    Rojas Santana, Arturo; Jiménez Machado, Gerard; López Mago, Dorilian; Pérez Torres, Juan (American Physical Society, 2020-11-11)
    Article
    Open Access
    There is renewed interest in using the coherence between beams generated in separate down- converter sources for new applications in imaging, spectroscopy, microscopy and optical coherence tomography (OCT). These schemes ...
  • Nonlinearity-induced photonic topological insulator 

    Maczewsky, Lukas J.; Heinrich, Matthias; Kremer, Mark; Ivanov, Seergey K.; Ehrhardt, Max; Martínez, Franklin; Kartashov, Yaroslav V.; Konotop, Vladimir V.; Torner Sabata, Lluís; Bauer, Dieter; Szameit, Alexander (2020-11-06)
    Article
    Open Access
    A hallmark feature of topological insulators is robust edge transport that is impervious to scattering at defects and lattice disorder. We demonstrate a topological system, using a photonic platform, in which the existence ...
  • Spiraling vortices in exciton-polariton condensates 

    Ma, Xuekai; Kartashov, Yaroslav V.; Gao, Tingge; Torner Sabata, Lluís; Schumacher, Stefan (American Physical Society (APS), 2020-07-23)
    Article
    Open Access
    We introduce the phenomenon of spiraling vortices in driven-dissipative (nonequilibrium) exciton-polariton condensates excited by a nonresonant pump beam. At suitable low pump intensities, these vortices are shown to spiral ...
  • Ultrashort pulse characterisation with SHG collinear-FROG 

    Amat Roldán, Iván; Cormack, Iain G.; Loza Álvarez, Pablo; Gualda Manzano, Emilio José; Artigas García, David (2004-03)
    Article
    Open Access
    We outline criteria for fast and accurate acquisition of collinear FROG (CFROG) trace and how it can be transformed into the more traditional noncollinear FROG trace. The CFROG has an intrinsically simple geometry that ...
  • 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 ...
  • 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 ...

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