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Related Experiment Videos

Optical solitons as quantum objects.

Yves Pomeau1, Martine Le Berre

  • 1Laboratoire de Physique Statistique de l'Ecole normale supérieure, 24 Rue Lhomond, 75231 Paris Cedex 05, France.

Chaos (Woodbury, N.Y.)
|October 2, 2007
PubMed
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Classical bright solitons exhibit stable symmetric or asymmetric states in coupled fibers. Quantum tunneling, absent classically, creates unique quantum states, with potential experimental realization if soliton coherence is maintained.

Area of Science:

  • Nonlinear optics
  • Quantum physics
  • Fiber optics

Background:

  • Bright solitons in coupled optical fibers display distinct classical behaviors based on coupling strength.
  • Stable symmetric states occur at strong coupling, while stable asymmetric states emerge at weak coupling.
  • Asymmetric states represent reciprocal propagation states with energy localized in one fiber.

Purpose of the Study:

  • To investigate the quantum mechanical behavior of bright solitons in coupled identical fibers.
  • To explore the phenomenon of quantum tunneling between fibers, which lacks a classical analog.
  • To estimate the rate of quantum tunneling and assess its experimental feasibility.

Main Methods:

  • Quantization of a simplified dynamical model derived from Lagrangian equations.

Related Experiment Videos

  • Utilizing test functions to approximate the soliton dynamics.
  • Analysis of quantum tunneling rates in the context of coupled fiber solitons.

    • Main Results:

    • Quantum tunneling between fibers prevents the formation of stable asymmetric eigenstates, a key difference from classical solitons.
    • A method for estimating the tunneling rate was developed.
    • The estimated tunneling rates suggest potential experimental observation.

    Conclusions:

    • Quantum tunneling is a unique phenomenon in coupled fiber solitons, leading to non-classical propagation dynamics.
    • Experimental verification of soliton quantum tunneling is plausible under conditions of maintained quantum coherence.