Interactions of condensate atoms in the process of velocity-selective coherent population trapping |
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Authors: | L V Il’ichev |
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Institution: | 1.Institute of Automation and Electrometry, Siberian Branch,Russian Academy of Sciences,Novosibirsk,Russia;2.Novosibirsk State University,Novosibirsk,Russia |
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Abstract: | The properties of a one-dimensional atomic Bose condensate are studied under the assumption that the condensation leads to
a state of velocity-selective coherent population trapping. This state is characterized by the quantum correlation (entanglement)
between the intrinsic angular momentum of an atom and its translational motion underlying nontrivial features of the condensate.
The effects of weak interatomic interaction are taken into account. The steady state of above-condensate atoms corresponding
to the slow decay of the state with coherent population trapping is found. The dynamic problem concerning the evolution of
the system of above-condensate atoms after switching off the optical field forming the state with coherent population trapping
is solved. The solution is found by the diagonalization of the Hamiltonian based on introducing the Bogoliubov quasiparticles
with the unusual dispersion law. |
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Keywords: | |
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