Theory of strong outcoupling from Bose-Einstein condensates
Robert Graham (Fachbereich Physik, Universit\"at GH Essen, Essen,, Germany), Dan F. Walls (Department of Physics, University of Auckland,, Auckland, New Zealand)
TL;DR
This paper develops an analytical theory describing the dynamics of Bose-Einstein condensates under strong outcoupling conditions using coupled Gross-Pitaevskii equations, covering various electromagnetic coupling methods.
Contribution
It provides the first approximate analytical solutions for strong outcoupling regimes in Bose-Einstein condensates across different electromagnetic coupling techniques.
Findings
Analytical solutions for large condensates under strong outcoupling
Unified theory for rf, microwave, and Raman outcoupling methods
Insights into the dynamics of trapped and untrapped states
Abstract
We study the dynamics of a magnetically trapped Bose-Einstein condensate in the presence of an external electromagnetic field coupling trapped, untrapped and antitrapped Zeeman sublevels. For large condensates an approximate analytical solution of the coupled Gross-Pitaevskii equations is given in the regime of strong outcoupling. The theory is developed for the cases of rf-outcoupling within a hyperfine manifold of states, micowave-outcoupling connecting states in two different hyperfine manifolds, and Raman outcoupling.
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