Extracting Atoms on Demand with Lasers

Details Extracting Atoms on Demand with Lasers Extracting Atoms on Demand with Lasers

2004-12-23

arxiv.org/abs/quant-ph/0412181v1

Phys. Rev. A 71, 053601 (2005)

Physics

Quantum Physics

11 pages, 8 figures

Scientific paper

10.1103/PhysRevA.71.053601

We propose a scheme that allows to coherently extract cold atoms from a reservoir in a deterministic way. The transfer is achieved by means of radiation pulses coupling two atomic states which are object to different trapping conditions. A particular realization is proposed, where one state has zero magnetic moment and is confined by a dipole trap, whereas the other state with non-vanishing magnetic moment is confined by a steep microtrap potential. We show that in this setup a predetermined number of atoms can be transferred from a reservoir, a Bose-Einstein condensate, into the collective quantum state of the steep trap with high efficiency in the parameter regime of present experiments.

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