Open AccessCoherent population trapping in a specific model
Author(s) -
Bi Dong-Yan
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.4685
Subject(s) - trapping , population , molecule , field (mathematics) , physics , atomic physics , laser , optics , quantum mechanics , demography , geography , mathematics , sociology , pure mathematics , forestry
Coherent population trapping is shown to occur in a driven symmetric double-well potential. In the model of the ammonia molecule, for a molecule initially prepared in its lower doublet, under certain circumstances, the upper level remains unpopulated, this occurs in spite of the fact that the laser field is resonant with the |2〉→|3〉 trasition. This is a coherent population trapping phenomenon which cannot be accounted for with the convential models.