[en] We investigate the production of s-wave scattering halos from collisions between the momentum components of a Bose–Einstein condensate released from an optical lattice. The lattice periodicity translates in a momentum comb responsible for the quantization of the halos' radii. We report on the engineering of those halos through the precise control of the atom dynamics in the lattice: we are able to specifically enhance collision processes with given center-of-mass and relative momenta. In particular, we observe quantized collision halos between opposite momenta components of increasing magnitude, up to 6 times the characteristic momentum scale of the lattice.
Disciplines :
Physics
Author, co-author :
Chatelain, G.
Dupont, N.
Arnal, M.
Brunaud, V.
Billy, J.
Peaudecerf, B.
Schlagheck, Peter ; Université de Liège - ULiège > Département de physique > Physique quantique statistique
Guéry-Odelin, D.
Language :
English
Title :
Observation and control of quantized scattering halos
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A shift ϕ0 leads to a displacement of the lattice by δx = d × ϕ 2π 0 .
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