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Nano-optics and nanophotonics

Generation and Application of Frequency-Uncorrelated Photon Pairs

Tianming Zhao, Xiao‐Hui Bao, Bo Zhao, Jian-Wei Pan

Published Jan 1, 2015• 0 citations
Publisher
DOI
10.1007/978-3-319-19231-4_12

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The bandwidth and the frequency correlations of quantum light can be considered as a resource for the implementation of new quantum information algorithms, and it should enable the applicability of quantum techniques not yet implemented. For that purpose, the control of the frequency correlations, and the bandwidth, of single and paired photons is an essential ingredient, since the optimum bandwidth, as well as the most appropriate type of frequency correlations for a specific quantum application, depend on the specific quantum information application under consideration. Here we elucidate and implement new strategies to tailor the frequency properties of quantum light. Such strategies, which are based on the use of non collinear spontaneous parametric down conversion (SPDC) configurations, include the generation of narrow and enhanced bandwidth quantum light, the control of the frequency correlations of paired photon, and the generation of heralded single photons with a high degree of purity from pairs of uncorrelated photons.