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Physics Letters A

Transient optical properties of coherent four-level atoms without undepleted ground-state approximation

Hui‐jun Li, Chao Hang, Guoxiang Huang

Published Apr 19, 2007• 8 citations
Publisher
DOI
10.1016/j.physleta.2007.04.039

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A theory of coherent transients is developed in which a sequence of optical pulses is incident on a sample of trapped atoms and gives rise to phase-matched emission from the sample. The trapping potential for the atoms can be state dependent, necessitating a quantum treatment of the center-of-mass motion. A source-field approach is followed, modified to account for the quantized motion of the atoms. The theory is illustrated with two examples, one involving the creation of ground-Rydberg level coherence in an optical lattice and the second Raman coherence between two ground-state sublevels of atoms in a dipole trap. For state-independent potentials, a comparison is made with a theory in which the center-of-mass motion is treated classically.