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Showing 1–7 of 7 results
Advanced filters: Author: Davide Pierangeli Clear advanced filters

  • Recovering missing phase from measured intensity is central to X-ray crystallography and diffraction imaging but is a hard, non-convex inverse problem. The authors reformulate coded diffraction pattern phase retrieval exactly as minimizing a continuous XY energy and solve it with gain-based photonic oscillator networks with efficient scaling and noise tolerance.

    • Richard Zhipeng Wang
    • Guangyao Li
    • Natalia G. Berloff
    ResearchOpen Access
    Communications Physics
    P: 1-12

  • Replica symmetry breaking describes identical copies of a randomly interacting system exhibiting different dynamics. Here, Pierangeli et al. observe this critical phenomenon in the optical wave propagation inside a disordered nonlinear waveguide.

    • Davide Pierangeli
    • Andrea Tavani
    • Eugenio DelRe
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-7

  • Rouge waves have been observed in a number of complex systems, but not in biological structures. Here, the authors report the observation of optical rouge waves manifesting in tumor-cell spheroids when illuminated by randomly modulated laser beams.

    • Davide Pierangeli
    • Giordano Perini
    • Claudio Conti
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-8

  • The authors demonstrate a single shot polarimetry of vector beams without requiring polarization optics. They map the beam polarization content into a spatial intensity distribution and utilize supervised learning for single-shot measurements of multiple polarizations.

    • Davide Pierangeli
    • Claudio Conti
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-8

  • Theories state that transitions between extreme waves are allowed but experimental confirmations are lacking because of lack of control strategies. Here, the authors propose and experimentally report, for the first time, the use of topological indices to control the generation of extreme waves.

    • Giulia Marcucci
    • Davide Pierangeli
    • Claudio Conti
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-8

  • Spatial photonic Ising machine (SPIM) has shown promise as a power efficient Ising machine, but is currently limited in the range of problems that it can implement. The authors identify factors influencing the performance of SPIM and investigate methods to expand the range of problems available to SPIM.

    • Richard Zhipeng Wang
    • James S. Cummins
    • Natalia G. Berloff
    ResearchOpen Access
    Communications Physics
    Volume: 8, P: 1-15

  • In nonlinear optics, efficient frequency conversion typically requires phase-matching conditions, resulting in wavelength, polarization, and angular selectivity. Here, these constraints are overcome in a supercrystal with giant refraction index, allowing wide spectral and angular acceptance.

    • Ludovica Falsi
    • Luca Tartara
    • Eugenio DelRe
    ResearchOpen Access
    Communications Materials
    Volume: 1, P: 1-8