Trapping and transmission of matter-wave solitons in a collisionally inhomogeneous environment

Physical Review A (Impact Factor: 2.99). 09/2005; DOI: 10.1103/PhysRevA.74.053614
Source: arXiv

ABSTRACT We investigate bright matter-wave solitons in the presence of a spatially varying scattering length. It is demonstrated that, even in the absence of any external trapping potential, a soliton can be confined due to the inhomogeneous collisional interactions. Moreover we observe the enhanced transmission of matter-wave solitons through potential barriers for suitably chosen spatial variations of the scattering length. The results indicate that the manipulation of atomic interactions can become a versatile tool to control the dynamics of matter waves. Comment: 4 pages, 4 figures

  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: We have experimentally realized the self-generation of dense trains of spin-wave solitons in active magnetic-film ring resonators. The principle of the soliton auto-oscillator was based on the nonlinear interaction of two copropagating spin waves having the ratio between their group velocities equal to 2 and the transmission bands well separated in the frequency space. We show that under these conditions up to six dark solitons can simultaneously circulate in the active ring. The solitonic nature of the generated pulses is proven by the comparison of the obtained waveforms with those calculated on the basis of the nonlinear Schrödinger equation model.
    Physical Review B 08/2009; 80(5). · 3.66 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The aim of this introductory article is two-fold. First, we aim to offer a general introduction to the theme of Bose-Einstein condensates, and briefly discuss the evolution of a number of relevant research directions during the last two decades. Second, we introduce and present the articles that appear in this Special Volume of Romanian Reports in Physics celebrating the conclusion of the second decade since the experimental creation of Bose-Einstein condensation in ultracold gases of alkali-metal atoms.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: This review paper presents an overview of the theoretical and experimental progress on the study of matter-wave dark solitons in atomic Bose-Einstein condensates. Upon introducing the general framework, we discuss the statics and dynamics of single and multiple matter-wave dark solitons in the quasi one-dimensional setting, in higher dimensional settings, as well as in the dimensionality crossover regime. Special attention is paid to the connection between theoretical results, obtained by various analytical approaches, and relevant experimental observations.
    Journal of Physics A Mathematical and Theoretical 05/2010; 43. · 1.77 Impact Factor

Full-text (2 Sources)

Available from
May 27, 2014