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|Title:||Stability and decay of Bloch oscillations in the presence of time-dependent nonlinearity|
|Source:||Gaul, C., Díaz, E., Lima, R.P.A., Domínguez-Adame, F., Müller, C.A. (2011-11-23). Stability and decay of Bloch oscillations in the presence of time-dependent nonlinearity. Physical Review A - Atomic, Molecular, and Optical Physics 84 (5) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.84.053627|
|Abstract:||We consider Bloch oscillations of Bose-Einstein condensates in the presence of a time-modulated s-wave scattering length. Generically, the interaction leads to dephasing and decay of the wave packet. Based on a cyclic-time argument, we find-in addition to the linear Bloch oscillation and a rigid soliton solution-an infinite family of modulations that lead to a periodic time evolution of the wave packet. In order to quantitatively describe the dynamics of Bloch oscillations in the presence of time-modulated interactions, we employ two complementary methods: collective coordinates and the linear stability analysis of an extended wave packet. We provide instructive examples and address the question of robustness against external perturbations. © 2011 American Physical Society.|
|Source Title:||Physical Review A - Atomic, Molecular, and Optical Physics|
|Appears in Collections:||Staff Publications|
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