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arXiv · quant-ph/0309175

Nonclassical photon pairs generated from a room-temperature atomic ensemble

Wei Jiang·Chao Han·Peng Xue·L. -M. Duan·G. -C. Guo
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Abstract

We report experimental generation of non-classically correlated photon pairs from collective emission in a room-temperature atomic vapor cell. The nonclassical feature of the emission is demonstrated by observing a violation of the Cauchy-Schwarz inequality. Each pair of correlated photons are separated by a controllable time delay up to 2 microseconds. This experiment demonstrates an important step towards the realization of the Duan-Lukin-Cirac-Zoller scheme for scalable long-distance quantum communication.

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Wei Jiang, Chao Han, Peng Xue, L. -M. Duan, G. -C. Guo. 2003-11-18. Nonclassical photon pairs generated from a room-temperature atomic ensemble. https://doi.org/10.1103/physreva.69.043819

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