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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Outline• Coherent quantum control <strong>of</strong> atomic Bose-Einsteincondensates (BECs) by solid-state devices• <strong>Quantum</strong> <strong>reflection</strong> <strong>of</strong> a BEC <strong>from</strong> a planar Si surface– Experiments at MIT (Pasquini, Ketterle)– Analysis <strong>of</strong> the experiments– Interactions, vortex rings and cloud shape crucial• Interaction <strong>of</strong> BECs with two-dimensional electron gases– Re-writable alkali-atom lithography <strong>of</strong> quantum devices– Using 2DEGs to overcome present limitations <strong>of</strong> atom chips
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