Spontaneous emission of a cesium atom near a nanofiber: Efficient coupling of light to guided modes

Fam Le Kien, S. Dutta Gupta, V. I. Balykin, and K. Hakuta

Phys. Rev. A 72, 032509 – Published 28 September 2005

Abstract

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 find applications for developing nanoprobes for atoms and efficient couplers for subwavelength-diameter fibers.

Received 16 June 2005
Publisher error corrected 3 October 2005

DOI:https://doi.org/10.1103/PhysRevA.72.032509

Corrections

3 October 2005

Erratum

Publisher's Note: Spontaneous emission of a cesium atom near a nanofiber: Efficient coupling of light to guided modes [Phys. Rev. A 72, 032509 (2005)]

Fam Le Kien, S. Dutta Gupta, V. I. Balykin, and K. Hakuta

Phys. Rev. A 72, 049904 (2005)

Authors & Affiliations

Fam Le Kien^1,*, S. Dutta Gupta^1,2, V. I. Balykin^1,3, and K. Hakuta¹

¹Department of Applied Physics and Chemistry, University of Electro-Communications, Chofu, Tokyo 182-8585, Japan
²School of Physics, University of Hyderabad, Hyderabad, India
³Institute of Spectroscopy, Troitsk, Moscow Region, 142092, Russia

^*Also at Institute of Physics and Electronics, Vietnamese Academy of Science and Technology, Hanoi, Vietnam.

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Issue

Vol. 72, Iss. 3 — September 2005

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