Bragg-grating-enhanced narrowband spontaneous parametric downconversion.
نویسندگان
چکیده
We propose a new method to narrow the line width of entangled photons generated from spontaneous parametric downconversion (SPDC). The single structure device incorporates an internal Bragg grating onto a nonlinear optical waveguide. We study theoretically the spectral characteristics of SPDC under two Bragg grating structures. We show that using the Bragg grating with a midway pi-phase shifter, it is a promising way to generate narrow-line (~GHz to sub-GHz) entangled photons.
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عنوان ژورنال:
- Optics express
دوره 18 6 شماره
صفحات -
تاریخ انتشار 2010