Enhanced Quantum Reflection of Matter-Wave Solitons

Details Enhanced Quantum Reflection of Matter-Wave Solitons Enhanced Quantum Reflection of Matter-Wave Solitons

2005-05-29

arxiv.org/abs/cond-mat/0505697v3

Europhys. Lett., 73, 321 (2006)

Physics

Condensed Matter

Other Condensed Matter

7 pages, 3 figures, to be published in Europhys. Lett

Scientific paper

10.1209/epl/i2005-10408-4

Matter-wave bright solitons are predicted to reflect from a purely attractive potential well although they are macroscopic objects with classical particle-like properties. The non-classical reflection occurs at small velocities and a pronounced switching to almost perfect transmission above a critical velocity is found, caused by nonlinear mean-field interactions. Full numerical results from the nonlinear Schr\"{o}dinger equation are complimented by a two-mode variational calculation to explain the predicted effect, which can be used for velocity filtering of solitons. The experimental realization with laser-induced potentials or two-component Bose-Einstein condensates is suggested.

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