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Effects of Spontaneously Generated Coherence on Intensity-Intensity Correlation in a Driven Y-Type Atom |
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| Authors: | WANG Fei SHI Wen-Xing GONG Cheng |
| Affiliation: | 1.College of Science, China Three Gorges University, Yichang 443002, China;2.School of Physics $&$ Information Engineering, Jianghan University, Wuhan 430056, China;3.State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences, Shanghai 201800, China |
| Abstract: | In this paper, we investigate the spontaneously generated coherence (SGC) effects on the fluorescence fields intensity-intensity correlation in a resonant driven four-level Y-type atomic system. By using a strong control field, in the absense of SGC effects, strong correlation and anticorrelation fluorescence photons can be produced from two ladder transitions in this system respectively. However, in the presence of SGC effects, the fluorescence fields correlation properties are reversed for the two transitions. The above phenomena can be traced to the quantum destructive or constructive interference in terms of dressed states. |
| Keywords: | intensity-intensity correlation spontaneously generated coherence |
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