NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Narrow-Band Photon Pairs Generated from Spontaneous Parametric Down Conversion in a Bragg-Grating Enhanced Waveguide
Published
Author(s)
Li Yan, Lijun Ma, Xiao Tang
Abstract
We propose a new method to narrow the linewidth of photon pairs generated from spontaneous parametric down conversion (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 - phase shifter, it is a promising way to implement narrow-line (GHz to sub-GHz) entangled photon sources.
Proceedings Title
Proceedings of SPIE, Volume 7815, Quantum Communications and Quantum Imaging VIII
Volume
7815
Conference Dates
August 1-5, 2010
Conference Location
San Diego, CA, US
Conference Title
SPIE Optics+Photonics 2010, Quantum Communications and Quantum Imaging VIII
Yan, L.
, Ma, L.
and Tang, X.
(2010),
Narrow-Band Photon Pairs Generated from Spontaneous Parametric Down Conversion in a Bragg-Grating Enhanced Waveguide, Proceedings of SPIE, Volume 7815, Quantum Communications and Quantum Imaging VIII, San Diego, CA, US, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=906178
(Accessed October 16, 2025)