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Enhanced Quantum Reflection of Matter-Wave Solitons

Chaohong Lee·Joachim Brand
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Abstract

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 Schrödinger 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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Chaohong Lee, Joachim Brand. 2005-12-07. Enhanced Quantum Reflection of Matter-Wave Solitons. https://doi.org/10.1209/epl%2Fi2005-10408-4

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