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Acta Optica Sinica

Multiformity of Subtypes of Cascade-Type Four-Level Optical Quantum Coherence Systems

刘晓东 Liu Xiaodong, 孟冬冬 Meng Dongdong, 张森林 Zhang Senlin, 闫学群 Yan Xuequn

Published Jan 1, 2010• 2 citations
Publisher
DOI
10.3788/aos20103011.3336

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There are many distinguishable subtypes of diamond-type four-level optical quantum coherent(OQC) systems,which come with high structural diversity.We selected transition channels properly according to the rules for dipole transition selection.With a corresponding laser field,we used Boolean algebra methods to classify diamond-type four-level OQC systems into nine real-world channel subtypes(RCSs).Also,we went further by classifying those RCSs into eighty so-called intensity subtypes(ISs) exactly,depending on the excitation intensity of the laser for different transition channels.We focused our discussion on the structural diversity of diamond-type four-level systems,while pointing out which substypes have been studied in some aspects and which ones have not even been theoretically studied.