Long lived matter waves Bloch oscillations and dynamical localization by time dependent nonlinearity management

Details Long lived matter waves Bloch oscillations and dynamical localization by time dependent nonlinearity management Long lived matter waves Bloch oscillations and dynamical localization by time dependent nonlinearity management

2009-07-21

arxiv.org/abs/0907.3720v1

J. Phys. B: At. Mol. Opt. Phys. 42, 105302 (2009)

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1088/0953-4075/42/10/105302

We introduce a new method to achieve long lived Bloch oscillations and dynamical localization of matter wave gap solitons in optical lattices. The method is based on time dependent modulations of the nonlinearity which can be experimentally implemented by means of the Feshbach resonance technique. In particular, we show that the width of the wave packet is preserved if time modulations of the nonlinearity are taken proportional to the curvature of the linear band spectrum which for most typical experimental settings are well approximated by harmonic time modulations of proper frequencies.

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