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Optics Communications

Position-dependent oscillated decay of a two-level atom immersed in a two-dimensional photon fluid

Xiongfeng Zhang, Miao Yin, Wenyao Liang

Published Sep 24, 2015• 1 citation
Publisher
DOI
10.1016/j.optcom.2015.09.064

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We have studied the properties of the spontaneous emission from a two-level atom embedded in two-band photonic crystals. Due to the anisotropic two-band dispersion relation, the localized and propagating fields cannot coexist, this leads to the non-quasi-oscillation behaviour of the upper level population. Thus the upper level population will tend to a constant as time goes to infinity, or decay with time in a power law, or decay with time exponentially, different from that in the isotropic one-band dispersion relation case. These properties are directly related to the relative position of the upper level from the band edge and the width of the gap.