Matter-wave soliton interferometer based on a nonlinear splitter

Hidetsugu Sakaguchi, Boris A. Malomed

    Research output: Contribution to journalArticle

    31 Citations (Scopus)

    Abstract

    We elaborate a model of the interferometer which, unlike previously studied ones, uses a local (δ-functional) nonlinear repulsive potential, embedded into a harmonic-oscillator trapping potential, as the splitter for the incident soliton. An estimate demonstrates that this setting may be implemented by means of the localized Feshbach resonance controlled by a focused laser beam. The same system may be realized as a nonlinear waveguide in optics. Subsequent analysis produces an exact solution for scattering of a plane wave in the linear medium on the δ -functional nonlinear repulsive potential, and an approximate solution for splitting of the incident soliton when the ambient medium is nonlinear. The most essential result, obtained by means of systematic simulations, is that the use of the nonlinear splitter provides the sensitivity of the soliton-based interferometer to the target, inserted into one of its arms, which is much higher than the sensitivity provided by the usual linear splitter.

    Original languageEnglish
    Article number025020
    JournalNew Journal of Physics
    Volume18
    Issue number2
    DOIs
    Publication statusPublished - Feb 22 2016

      Fingerprint

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy(all)

    Cite this