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Spontaneous emission of a cesium atom near a nanofiber: Efficient coupling of light to guided modes
2005
Physical Review A. Atomic, Molecular, and Optical Physics
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We study the spontaneous emission of a cesium atom in the vicinity of a subwavelength-diameter fiber. We show that the confinement of the guided modes and the degeneracy of the excited and ground states substantially affect the spontaneous emission process. We demonstrate that different magnetic sublevels have different decay rates. When the fiber radius is about 200 nm, a significant fraction ͑up to 28%͒ of spontaneous emission by the atom can be channeled into guided modes. Our results may
doi:10.1103/physreva.72.032509
fatcat:fqbnze4szbauneznyoaku6uyyi