文化大學機構典藏 CCUR:Item 987654321/24023
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    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://irlib.pccu.edu.tw/handle/987654321/24023


    题名: Spontaneous emission dynamics in an omnidirectional waveguide made of photonic crystals
    作者: Huang, CH (Huang, Chih-Hsien)
    Cheng, SC (Cheng, Szu-Cheng)
    Wu, JN (Wu, Jing-Nuo)
    Hsieh, WF (Hsieh, Wen-Feng)
    贡献者: Dept Phys
    关键词: BAND-GAP
    PHASE-TRANSITIONS
    QUANTUM OPTICS
    CLASSIFICATION
    REFLECTORS
    RESERVOIRS
    EQUATIONS
    ATOMS
    日期: 2011-06-08
    上传时间: 2013-01-17 14:08:36 (UTC+8)
    摘要: The spontaneous emission dynamics of atoms embedded in an omnidirectional waveguide (ODWG), a novel optical waveguide, is studied on the basis of the complete reflection of one-dimensional photonic crystals. With the dispersion curve of the single waveguide mode within the photonic band gap and various extents of background dissipation, we characterize the photon-atom interaction in the ODWG. The photon emitter of the system is a two-level atom embedded in the low-index medium of the multilayer-film ODWG or the atom-ODWG system. Fractional calculus, an innovative mathematical method in optical systems, is applied to solve the equation of motion for this atom-ODWG system. Two kinds of states with different group velocities exhibit totally distinctive dynamical behavior. The high frequency waveguide mode with a fast group velocity shows fast exponential decay in propagation while the band-edge mode with a slow group velocity displays non-Markovian dynamics with non-exponential oscillating time evolution. We therefore suggest different functions of this atom-ODWG system for these two kinds of states. The richness of the physical content of the system is also revealed through investigating the dynamical behavior of the band-edge mode. These results aid in further application and fundamental understanding of the atom-ODWG system.
    關聯: JOURNAL OF PHYSICS-CONDENSED MATTER Volume: 23 Issue: 22 Article Number: 225301
    显示于类别:[光電物理系] 期刊論文

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