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Showing 1–11 of 11 results
Advanced filters: Author: Maria V. Chekhova Clear advanced filters

  • Nonlinear interactions such as parametric down-conversion and four-wave mixing are limited by transverse and longitudinal walk-off effects. Here, Pérez et al. demonstrate bright, tunable, diffraction-limited twin-beam radiation by ensuring that signal or idler pulse propagates in the direction or velocity of the pump.

    • Angela M. Pérez
    • Kirill Yu Spasibko
    • Maria V. Chekhova
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-5

  • High-quality narrow bandwidth single-photon states with tunable frequency are essential for quantum and atomic technologies. Using a whispering gallery mode resonator, Förtsch et al. build such a source with wavelength tuning across 100 nm and controllable narrow bandwidth.

    • Michael Förtsch
    • Josef U. Fürst
    • Christoph Marquardt
    Research
    Nature Communications
    Volume: 4, P: 1-5

  • Electric-field tunable generation of entangled photon pairs is achieved by spontaneous parametric down-conversion in a ferroelectric nematic liquid crystal, with an efficiency comparable to that of the best nonlinear crystals.

    • Vitaliy Sultanov
    • Aljaž Kavčič
    • Matjaž Humar
    ResearchOpen Access
    Nature
    Volume: 631, P: 294-299

  • High-harmonic generation has so far been driven only by classical light. Now, its driving by a bright squeezed vacuum—a quantum state of light—has been observed and shown to be more efficient than using classical light.

    • Andrei Rasputnyi
    • Zhaopin Chen
    • Francesco Tani
    ResearchOpen Access
    Nature Physics
    Volume: 20, P: 1960-1965

  • This study examines the impact of herbivorous insects on biogeochemical cycling within forests. From a global network of 74 plots within 40 mature, undisturbed broadleaved forests, they show that background levels of insect herbivory are sufficiently large to alter both ecosystem element cycling and influence terrestrial carbon cycling.

    • Bernice C. Hwang
    • Christian P. Giardina
    • Daniel B. Metcalfe
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-11

  • Photoemission experiments demonstrate that the photon number statistics of the exciting light can be imprinted on the emitted electrons, allowing the controlled generation of classical or non-classical electron number statistics of free electrons.

    • Jonas Heimerl
    • Alexander Mikhaylov
    • Peter Hommelhoff
    Research
    Nature Physics
    Volume: 20, P: 945-950

  • Triggered by the fluctuations of the electromagnetic vacuum, parametric down-conversion offers a new primary radiation standard based on quantum nonlinear optics.

    • Samuel Lemieux
    • Enno Giese
    • Robert W. Boyd
    Research
    Nature Physics
    Volume: 15, P: 529-532

  • Nonlinear interferometry based on nondegenerate spontaneous parametric down-conversion allows for midinfrared spectroscopy without detecting mid-infrared photons. The authors develop Fourier-transform infrared spectroscopy with undetected photons using a high-parametric-gain nonlinear interferometer and demonstrate mid-infrared absorption spectroscopy of polymers.

    • Kazuki Hashimoto
    • Dmitri B. Horoshko
    • Maria V. Chekhova
    ResearchOpen Access
    Communications Physics
    Volume: 7, P: 1-7

  • While a lot of research efforts have been directed towards determining the emergence mechanism of optical rogue waves, less attention has been given to characterizing the level of “rogueness" in optical systems where rogue waves manifest. The authors provide such quantitative description for rogue waves resulting from supercontinuum generation

    • Éva Rácz
    • Kirill Spasibko
    • Radim Filip
    ResearchOpen Access
    Communications Physics
    Volume: 7, P: 1-9