Quantum reflection of bright solitary matter-waves from a narrow attractive potential
| Autor: | M. M. H. Yu, A. L. Marchant, J. L. Helm, T. P. Billam, J. Polo, Simon A. Gardiner, Ana Rakonjac, Simon L. Cornish, Christoph Weiss |
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| Rok vydání: | 2015 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases SIMPLE (dark matter experiment) Quantum Physics Condensed matter physics Atomic Physics (physics.atom-ph) FOS: Physical sciences 01 natural sciences 010305 fluids & plasmas Intensity (physics) Physics - Atomic Physics Position (vector) Quantum Gases (cond-mat.quant-gas) 0103 physical sciences Reflection (physics) Matter wave Physics::Atomic Physics Atomic physics 010306 general physics Maxima Condensed Matter - Quantum Gases Quantum Physics (quant-ph) Beam (structure) Quantum reflection |
| Zdroj: | Physical review A, 2016, Vol.93(2), pp.021604(R) [Peer Reviewed Journal] |
| DOI: | 10.48550/arxiv.1507.04639 |
| Popis: | We report the observation of quantum reflection from a narrow, attractive, potential using bright solitary matter-waves formed from a 85Rb Bose-Einstein condensate. We create narrow potentials using a tightly focused, red-detuned laser beam, and observe reflection of up to 25% of the atoms, along with the trapping of atoms at the position of the beam. We show that the observed reflected fraction is much larger than theoretical predictions for a narrow Gaussian potential well; a more detailed model of bright soliton propagation, accounting for the generic presence of small subsidiary intensity maxima in the red-detuned beam, suggests that these small intensity maxima are the cause of this enhanced reflection. Comment: 5 pages, 4 figures |
| Databáze: | OpenAIRE |
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