Nobuyuki Matsuda, Hiroki Takesue, Kaoru Shimizu, Yasuhiro Tokura, Eiichi Kuramochi, Masaya Notomi
We demonstrate the generation of quantum-correlated photon pairs from a Si photonic-crystal coupled-resonator optical waveguide. A slow-light supermode realized by the collective resonance of high-Q and small-mode-volume photonic-crystal cavities successfully enhanced the efficiency of the spontaneous four-wave mixing process. The generation rate of photon pairs was improved by two orders of magnitude compared with that of a photonic-crystal line defect waveguide without a slow-light effect.
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http://arxiv.org/abs/1304.0843
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