Zong-Quan Zhou, Chuan-Feng Li, Guang-Can Guo
We experimentally observed optical precursors in optically pumped crystals using polarization-based interference. By switching the user-programmable medium among the fast light, slow light and no-dispersion regimes, we observed an unchanged polarization states for the wavefronts. The robust polarization-encoded information carried by wavefronts suggests that precursors are the preferred carriers for both quantum and classical information in communication networks.
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http://arxiv.org/abs/1304.3547
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