Matter-Wave Gap Solitons in Atomic Band-Gap Structures
Elena A. OstrovskayaARC Centre for Quantum-Atom Optics, Nonlinear Physics Group, Research School of Physical Sciences and Engineering, The Australian National University, Canberra ACT 0200, AustraliaYuri S. KivsharARC Centre for Quantum-Atom Optics, Nonlinear Physics Group, Research School of Physical Sciences and Engineering, The Australian National University, Canberra ACT 0200, Australia
2003en
ABI
Аннотация
We demonstrate that a Bose-Einstein condensate in an optical lattice forms a reconfigurable matter-wave structure with a band-gap spectrum, which resembles a nonlinear photonic crystal for light waves. We study in detail the case of a two-dimensional square optical lattice and show that this atomic band-gap structure allows nonlinear localization of atomic Bloch waves in the form of two-dimensional matter-wave gap solitons.
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