Revisiting the which-way experiment with twisted light beams.
Revisiting the which-way experiment with twisted light beams.
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DOI：
10.1364/ol.39.005897
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发表时间：
2014-10
期刊：
影响因子：
3.6
通讯作者：
Lixiang Chen;Wuhong Zhang;Kai Cai;Yuanying Zhang;Qianqian Qi
中科院分区：
文献类型：
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作者：
Lixiang Chen;Wuhong Zhang;Kai Cai;Yuanying Zhang;Qianqian Qi
We report an experiment of which-way information and a quantum eraser based on polarization-controlled interference of two twisted light beams carrying high orbital angular momentum (OAM) up to ℓ=±50 and ±100, respectively. By changing the polarization plane of one OAM beam from 0° to 90° with respect to that of the other OAM beam, we observe the gradual disappearance of the interference petal-like patterns into the noninterference single bright rings. Subsequently, we use the eraser of a diagonal polarizer to retrieve the characteristic petal-like interference. The experimental results can be well explained in the frame of single-photon Greenberger-Horne-Zeilinger-like (GHZ-like) entanglement. Our work may be beneficial to understanding the wave-particle duality of light.
