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Showing 1–8 of 8 results
Advanced filters: Author: Matthieu Bellec Clear advanced filters

  • At interfaces between systems with topologically distinct band structure, robust symmetry protected states emerge. Here, Poli et al.control such states in a coupled dielectric resonator chain with parity-time symmetry and exploit their topological nature to protect them from absorptive losses.

    • Charles Poli
    • Matthieu Bellec
    • Henning Schomerus
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-5

  • Superfluidity of light enables movement without friction or, in optical terms, diffraction. Here, Michel et al. report the detection of the transition to superfluidity in the flow of a fluid of light past an obstacle in a bulk nonlinear crystal and extract the drag force exerted by the fluid of light.

    • Claire Michel
    • Omar Boughdad
    • Matthieu Bellec
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-6

  • A phase transition between disordered and quasi-ordered states, known as the Berezinskii–Kosterlitz–Thouless transition, has now been revealed in a two-dimensional photonic ‘fluid’. The interplay between phase singularities and coherence may lead to new vortex-based optical applications.

    • Matthieu Bellec
    • Claire Michel
    News & Views
    Nature Photonics
    Volume: 14, P: 471-473

  • Topological properties are defined from singularities of the wave functions delocalised in the bulk of the material, but most experimental manifestations remain indirect. Here, the authors observe a wavefront dislocation as a direct evidence of the phase singularity of the delocalised wave functions in 1D microwave photonic insulators.

    • Clément Dutreix
    • Matthieu Bellec
    • Fabrice Mortessagne
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-7

  • Single-cell analysis of Drosophila development with Hi-M suggests that physical proximity between regulatory regions does not necessarily instruct transcriptional states. Multi-way analyses identify the existence of regulatory hubs that emerge before topologically associating domains.

    • Sergio Martin Espinola
    • Markus Götz
    • Marcelo Nollmann
    Research
    Nature Genetics
    Volume: 53, P: 477-486

  • Zelda is a pioneer factor that regulates transcription in Drosophila embryos. Here, the authors use quantitative live imaging and mathematical modeling to measure the effect of Zelda on transcriptional dynamics and memory, observing temporal control of gene expression by Zelda through transient interactions in hubs.

    • Jeremy Dufourt
    • Antonio Trullo
    • Mounia Lagha
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-13

  • Large structure in the Universe, such as galaxies, are believed to form by a process called violent relaxation, which occurs over millions of years. The authors present a nonlinear optics experiment which shows direct observation of violent relaxation, whose evolution can be related to the equations governing galaxy formation.

    • Maria Chiara Braidotti
    • Martino Lovisetto
    • Daniele Faccio
    ResearchOpen Access
    Communications Physics
    Volume: 7, P: 1-6