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Dynamics of Bec Mixtures Loaded into the Optical Lattice in the Presence of Linear Inter-Component Coupling

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Journal of Russian Laser Research Aims and scope

Abstract

We consider dynamics of a two-component Bose–Einstein condensate, where the components correspond to different hyperfine states of the same sort of atoms. External microwave radiation leads to resonant transitions between the states. The condensate is loaded into the optical lattice. We invoke the tight-binding approximation and examine the interplay of spatial and internal dynamics of the mixture. We show that internal dynamics qualitatively depends on the intra-component interaction strength and the phase configuration of the initial state. We focus attention on two intriguing phenomena occurring at certain values of the parameters. The first phenomenon is the spontaneous synchronization of Rabi oscillations running inside neighboring lattice sites. The other one is demixing of the condensate with formation of immiscible solitons at sufficiently strong nonlinearity. Demixing is preceded by the transient regime with highly irregular behavior of the mixture.

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Authors and Affiliations

  1. V. I. Il’ichev Pacific Oceanological Institute, Far East Branch of the Russian Academy of Sciences, Vladivostok, Russia

    M. Yu. Uleysky & D. V. Makarov

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  1. M. Yu. Uleysky
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  2. D. V. Makarov
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Correspondence to D. V. Makarov.

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Uleysky, M.Y., Makarov, D.V. Dynamics of Bec Mixtures Loaded into the Optical Lattice in the Presence of Linear Inter-Component Coupling. J Russ Laser Res 35, 138–150 (2014). https://doi.org/10.1007/s10946-014-9409-4

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  • DOI: https://doi.org/10.1007/s10946-014-9409-4

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