Pancharatnam–Berry geometric phase memory based on spontaneous parametric down-conversion

Wen Rong Qi, Rui Liu, Ling Jun Kong, Zhou Xiang Wang, Shuang Yin Huang, Chenghou Tu, Yongnan Li, Hui Tian Wang*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

Phase memory is an effect in which the interaction between a coherent pump beam and a nonlinear crystal generates photon pairs via the spontaneous parametric down-conversion process, then the down-converted photons (signal and idler) can carry the phase information of the pump beam. There has been much research on the memory of the dynamic phase so far; however, there is no report on the memory of non-dynamic phase, to the best of our knowledge. Here we acquire a Pancharatnam–Berry (PB) geometric phase in a physical system when light travels along a trajectory in polarization-state space. Induced coherence occurs in a cascaded scheme composed of two nonlinear crystals, when the idler photons in both crystals are aligned to be indistinguishable. A NOON (N = 2) state is established when blocking the two idler photons. We explore the PB geometric phase memory of the NOON state and induced coherence. We find that the first-order interference of the two-photon state or signal photons can be controlled by introducing the PB geometric phase to the pump light. This may facilitate precise control of the phase of the down-converted photons.

源语言英语
页(从-至)682-685
页数4
期刊Optics Letters
45
3
DOI
出版状态已出版 - 1 2月 2020
已对外发布

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Qi, W. R., Liu, R., Kong, L. J., Wang, Z. X., Huang, S. Y., Tu, C., Li, Y., & Wang, H. T. (2020). Pancharatnam–Berry geometric phase memory based on spontaneous parametric down-conversion. Optics Letters, 45(3), 682-685. https://doi.org/10.1364/OL.384363