Quantum reflection of ultracold atoms from semiconductor surfaces
Quantum reflection of ultracold atoms from semiconductor surfaces
Quantum reflection of ultracold atoms from semiconductor surfaces
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Observing quantum <strong>reflection</strong>Low v x only realized in exceptional systems:1. Helium or hydrogen <strong>atoms</strong> incident on liquid heliumWhere low mass and weak atom-surface attraction allowquantum <strong>reflection</strong> to occur at energies ~ k B x 10 mK[Meyer et al., Cryogenics 3, 150 (1963)]2. Reflection <strong>of</strong> alkali <strong>atoms</strong> <strong>from</strong> a solid surfacerequires incident energy ~ k B x 10 nKFirst achieved for individual cold <strong>atoms</strong> grazingthe surface [F. Shimizu, PRL 86, 987 (2001)]
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