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Proceedings Paper

Waveguide source of correlated photon-pairs for chip-scale quantum information processing
Author(s): Jun Chen; Aaron J. Pearlman; Alexander Ling; Jingyun Fan; Alan Migdall
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Paper Abstract

We present a systematic study of a correlated photon-pair source based on a periodically-poled KTiOPO4 (PPKTP) waveguide. The waveguide was fabricated on a KTiOPO4 crystal supporting type-II parametric down-conversion. In addition, periodic poling was applied along the waveguide to quasi-phase-match the type-0 down-conversion process. The design pump wavelength is 532 nm, and the wavelengths of the down-converted, correlated photons are around 900 nm and 1300 nm. We examine the two-photon correlation spectra and singlephoton spectra at a variety of temperature and power settings for both type-0 and type II down-conversion processes. Our study shows that the waveguide source has a number of advantages compared to its bulk-crystal counterpart, including higher spectral brightness, narrower emission bandwidth and single spatial-mode output. With greatly simplified engineering, this compact, highly efficient, low photon-loss, and cost-effective waveguide source of correlated photon pairs is promising for future chip-scale quantum information processing applications.

Paper Details

Date Published: 26 August 2009
PDF: 13 pages
Proc. SPIE 7465, Quantum Communications and Quantum Imaging VII, 74650L (26 August 2009); doi: 10.1117/12.824196
Show Author Affiliations
Jun Chen, National Institute of Standards and Technology (United States)
Univ. of Maryland, College Park (United States)
Aaron J. Pearlman, National Institute of Standards and Technology (United States)
Alexander Ling, National Institute of Standards and Technology (United States)
Univ. of Maryland, College Park (United States)
Jingyun Fan, National Institute of Standards and Technology (United States)
Univ. of Maryland, College Park (United States)
Alan Migdall, National Institute of Standards and Technology (United States)
Univ. of Maryland, College Park (United States)


Published in SPIE Proceedings Vol. 7465:
Quantum Communications and Quantum Imaging VII
Ronald E. Meyers; Yanhua Shih; Keith S. Deacon, Editor(s)

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