We experimentally investigate various quantum polarization features of three-photon quantum states, including product and entangled states with varying purity. The three-photon quantum states are categorized into six classes based on the rotation symmetry of mean, variance, and skewness of the polarization distribution. The representative three-photon quantum states in each category is prepared from double-pair emission from pulsed spontaneous parametric down-conversion and quantum interferometry. We demonstrate that the three-photon quantum states show interesting quantum polarization properties, such as, maximum sum-uncertainty and hidden polarizations.
@article{arxiv.1706.07755,
title = {Experimental characterization of quantum polarization of three-photon states},
author = {Yosep Kim and Gunnar Björk and Yoon-Ho Kim},
journal= {arXiv preprint arXiv:1706.07755},
year = {2017}
}