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We report the frequency and polarization characteristics of correlated photon pairs generated in a Si wire waveguide (SWW). We confirmed that the bandwidth for correlated photon-pair generation was at least >2.8 THz. Moreover, we carried out a classical four-wave mixing experiment using strong pump and idler lights to estimate the bandwidth for correlated photon-pair generation. The results indicated...
Nonlinear optical phenomena are remarkably enhanced in silicon photonic wire waveguides with ultra-small cores. Efficient nonlinear functions, such as a wavelength conversion and high-purity entangled photon pair generation, are demonstrated.
Silicon photonics technologies are potentially useful in quantum information and communication experiments. This talk describes the first entangled photon-pair generation experiment to use a silicon wire waveguide, and discusses the application of silicon-based entanglement sources in quantum communication systems.
We reported the first entanglement generation experiments using a silicon wire waveguide. In our experiments, we used a 1.09-cm long, 460-nm wide, and 220-nm thick waveguide that was fabricated from a silicon-on-insulator wafer. The waveguide loss was 3.1 dB, and the effective area calculated using a mode solver was 0.04 mum2 . We hope that our work will constitute a bridge between the silicon photonics...
We report the fabrication of spot-size converters to efficiently connect a rib-type silicon wire waveguide with an optical fiber. The spot-size converter consists of a channel-type Si inverse taper core without a slab section and a SiOx waveguide that covers the taper. To make the Si taper core, we eliminate the Si slab at the end of the rib waveguide using a two-step etching process. The coupling...
We report our recent progress on Si-wire-based optical devices. We made some functional devices that integrate several fundamental components and confirmed that they exhibited excellent characteristics due to the accuracy of Si microfabrication.
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