Publications by authors named "Katsuhiko Tokuda"
Article Synopsis
- - The research focuses on developing an efficient method for generating broadband, spatially separable photon pairs using a chirped quasi-phase matching (QPM) slab waveguide, which is significant for optical quantum applications.
- - The study shows that a 3% chirped QPM slab waveguide produces a much larger photon pair bandwidth (190 nm) compared to a non-chirped version (26 nm), along with higher photon pair generation efficiency.
- - The experiments confirmed successful two-photon interference, achieving a high visibility of 98% for the non-chirped device and 74% for the chirped device, demonstrating the effectiveness of slab waveguides in this context.
We present a highly efficient photon pair source using chirped quasi-phase-matched (QPM) devices with a ridge waveguide structure. We developed QPM waveguide devices with chirp rates of 3% and 6.7%.
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