Complete population transfer in a degenerate 3-level atom

Details Complete population transfer in a degenerate 3-level atom Complete population transfer in a degenerate 3-level atom

2003-06-23

arxiv.org/abs/quant-ph/0306157v1

Physics

Quantum Physics

22 pages, 4 figures

Scientific paper

10.1103/PhysRevA.69.023405

We find conditions required to achieve complete population transfer, via coherent population trapping, from an initial state to a designated final state at a designated time in a degenerate 3-level atom, where transitions are caused by an external interaction. Complete population transfer from an initially occupied state 1 to a designated state 2 occurs under two conditions. First, there is a constraint on the ratios of the transition matrix elements of the external interaction. Second, there is a constraint on the action integral over the interaction, or "area", corresponding to the phase shift induced by the external interaction. Both conditions may be expressed in terms of simple odd integers.

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