Spontaneous decay rate and Casimir-Polder interaction of a two-level atom in a Bragg-reflector cylindrical structure

Spontaneous decay rate and Casimir-Polder interaction of an excited two-level atom enclosed in a distributed-Bragg-reflector cylindrical waveguide are studied. Conditions for resonances to exist are established by comparing the distributed-Bragg-reflector-waveguide results with those of a perfectly...

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Bibliographic Details
Published in:Journal of physics. B, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2019-08, Vol.52 (16), p.165401
Main Authors: Chinh, Nguyen Dung, Hien, Tran Minh
Format: Article
Language:English
Subjects:
Casimir-Polder interaction
distributed-Bragg-reflector
spontaneous decay
waveguide
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Summary:Spontaneous decay rate and Casimir-Polder interaction of an excited two-level atom enclosed in a distributed-Bragg-reflector cylindrical waveguide are studied. Conditions for resonances to exist are established by comparing the distributed-Bragg-reflector-waveguide results with those of a perfectly reflecting hollow waveguide, and taking advantage of the simplicity of the Green tensor of the latter. The Casimir-Polder potential is obtained and found to exhibit a potential well along the cylinder axis. The results remain valid when realistic frequency-dependent permittivities of Si and SiO2 are used.
ISSN:0953-4075
1361-6455
DOI:10.1088/1361-6455/ab2362