Recent Submissions

  • Imaging an isolated water molecule using a single electron wave packet 

    Liu, Xinyao; Amini, Kasra; Steinle, Tobias; Sánchez, Aurelien; Belsa Carné, Blanca Maria; Moniruzzaman, Shaikh; Steinmetzer, Johannes; Anh-Thu, Le (American Institute of Physics (AIP), 2019-07-14)
    Article
    Open Access
    Observing changes in molecular structure requires atomic-scale Ångstrom and femtosecond spatio-temporal resolution. We use the Fourier transform (FT) variant of laser-induced electron diffraction (LIED), FT-LIED, to directly ...
  • Superfluid vortex dynamics on a torus and other toroidal surfaces of revolution 

    Guenther, Nils Eric; Massignan, Pietro Alberto; Fetter, Alexander L. (American Physical Society (APS), 2020-05-04)
    Article
    Open Access
    The superfluid flow velocity is proportional to the gradient of the phase of the superfluid order parameter, leading to the quantization of circulation around a vortex core. In this work, we study the dynamics of a ...
  • Plasmonics in atomically thin crystalline silver films 

    Fernández Gómez-Recuero, Laura; Mkhitaryan, Vahagn; Rodríguez Echarri, Álvaro; Abd El-Fattah, Zakaria M.; Brede, Jens; Guo, Qiushi; Ghosh, Arnab; García De abajo, F. Javier; Levanon, Naveh (2019-07-23)
    Article
    Open Access
    Light-matter interaction at the atomic scale rules fundamental phenomena such as photoemission and lasing while enabling basic everyday technologies, including photovoltaics and optical communications. In this context, ...
  • Theory of electron energy-loss spectroscopy in atomically thin metallic films 

    Rodríguez Echarri, Álvaro; García De abajo, F. Javier; Haahr Skjølstrup, Enok Johannes; Pederesen, Thomas G. (American Physical Society, 2020-04-28)
    Article
    Open Access
    We study strongly confined plasmons in ultrathin gold and silver films by simulating electron energy-loss spectroscopy. Plasmon dispersion relations are directly retrieved from the energy- and momentum-resolved loss ...
  • Quantum effects in the acoustic plasmons of atomically thin heterostructures 

    Rodríguez Echarri, Álvaro; Cox, Joel D.; García De abajo, F. Javier (Optical Society of American (OSA), 2019-05-20)
    Article
    Open Access
    Recent advances in nanofabrication technology now enable unprecedented control over 2D heterostructures, in whichsingle- or few-atom-thick materials with synergetic optoelectronic properties can be combined to ...
  • 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 ...
  • Light harvesting at oblique incidence decoupled from transmission in organic solar cells exhibiting 9.8% efficiency and 50% visible light transparency 

    Liu, Quan; Gerling Sarabia, Luis Guillermo; Bernal Texca, Francisco Gumaro; Toudert, Johann; Li, Tengfei; Zhan, Xiaowei; Martorell Pena, Jordi (2020-01-01)
    Article
    Open Access
    For many years, it has been recognized that potential organic photovoltaic cells must be integrated into elements requiring high transparency. In most of such elements, sunlight is likely to be incident at large angles. ...
  • Spatial spectroscopy for high resolution imaging 

    Villegas Juárez, Arturo; Torres, Juan P. (2020)
    Article
    Open Access
    Quantum estimation theory provides bounds for the precision in the estimation of a set of parameters that characterize a system. Two questions naturally arise: Is any of these bounds tight And if this is the case, what ...
  • 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 ...
  • Shopper intent prediction from clickstream e-commerce data with minimal browsing information 

    Requena Pozo, Borja; Cassani, Giovanni; Tagliabue, Jacopo; Greco, Ciro; Lacasa, Lucas (Nature, 2020-10-12)
    Article
    Open Access
    We address the problem of user intent prediction from clickstream data of an e-commerce website via two conceptually different approaches: a hand-crafted feature-based classification and a deep learning-based classification. ...
  • Tomato and melon Meloidogyne resistant rootstocks improve crop yield but melon fruit quality is influenced by the cropping season 

    Expósito Creo, Alejandro; Pujolà Cunill, Montserrat; Achaerandio Puente, María Isabel; Giné Blasco, Ariadna; Escudero Benito, Nuria; Fullana Pons, Aïda Magdalena; Cunquero Navarro, Marina; Loza Álvarez, Pablo; Sorribas Royo, Francisco Javier (2020-11-05)
    Article
    Open Access
    Four rotation sequences consisting of ungrafted tomato cv. Durinta – melon cv. Paloma or tomato grafted onto the resistant rootstock ‘Aligator’ – melon grafted onto the resistant Cucumis metuliferus accession BGV11135, and ...

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