Coherence length calculation for the outcoupled beam of atom laser
AUTOR(ES)
Saleh, Abdul-Basit A., Al-Hashmiy, Noori H. N.
FONTE
Brazilian Journal of Physics
DATA DE PUBLICAÇÃO
2007-09
RESUMO
We use the theory of coupled Gross-Pitaevskii equations to derive an expression for the current density of the propagating atoms coupled out of the condensate under the influence of gravity. By describing the propagation vector of the atoms and using a theoretical definition of the coherence length, we calculate the coherence lengths of 37K, 141Ce, and 249Fm atom lasers numerically. Our calculation method is verified with the available experimental and theoretical data in the literature. The results showed a very good agreement.
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