Now showing items 1-8 of 8

    • 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 ...
    • 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 ...
    • 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 ...
    • Measurement of noise-induced loss of polarization coherence 

      Jiménez Machado, Gerard (Universitat Politècnica de Catalunya, 2016-10)
      Bachelor thesis
      Restricted access - author's decision
      Experimental implementation of a Quantum-Optical Coherence Tomography (Q-OCT) system, by means of measuring and quantifying induced coherence.
    • 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 ...
    • Optical sectioning in induced coherence tomography with frequency-entangled photons 

      Valles Marin, Adam; Jiménez Machado, Gerard; Salazar Serrano, Luis Jose; Pérez Torres, Juan (American Physical Society, 2018-02-14)
      Article
      Open Access
      We demonstrate a different scheme to perform optical sectioning of a sample based on the concept of induced coherence [Zou et al., Phys. Rev. Lett. 67, 318 (1991)]. This can be viewed as a different type of optical coherence ...
    • Pendulum dynamics in an amusement park 

      Gurri Pérez, Pol; Amat, David; Espar Masip, Joan; Puig, Jordi; Jiménez Machado, Gerard; Sendra Molins, Lluc; Pardo Soto, Luis Carlos (2017-05-01)
      Article
      Open Access
      Pendulums have long been used to to determine the kinematics of non-inertial rotating systems. A proper study of this classical mechanical device under the action of a rotating reference frame can fully describe the behavior ...
    • Quantum Coherence and Quantum Correlations 

      Jiménez Machado, Gerard (Universitat Politècnica de Catalunya, 2017-07-09)
      Master thesis
      Open Access
      Covenantee:   Institut de Ciències Fotòniques (ICFO) / Universitat de Barcelona / Universitat Autònoma de Barcelona
      We demonstrate a new type of optical coherence tomography (OCT) scheme based on ideas put forward by Mandel's group in 1991, curiously the same year than the first OCT scheme was demonstrated. It involves the measurement ...