Matter-wave gap solitons in atomic band-gap structures |
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| Authors: | Ostrovskaya Elena A Kivshar Yuri S |
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| Institution: | ARC Centre for Quantum-Atom Optics, Nonlinear Physics Group, Research School of Physical Sciences and Engineering, The Australian National University, Canberra ACT 0200, Australia. |
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| Abstract: | 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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