Waveguide source of correlated photon-pairs for chip-scale quantum information processing

Jun Chen; Aaron J. Pearlman; Alexander Ling; Jingyun Fan; Alan Migdall

doi:10.1117/12.824196

26 August 2009 Waveguide source of correlated photon-pairs for chip-scale quantum information processing

Jun Chen, Aaron J. Pearlman, Alexander Ling, Jingyun Fan, Alan Migdall

Proceedings Volume 7465, Quantum Communications and Quantum Imaging VII; 74650L (2009) https://doi.org/10.1117/12.824196
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

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.

Citation Download Citation

Jun Chen, Aaron J. Pearlman, Alexander Ling, Jingyun Fan, and Alan Migdall "Waveguide source of correlated photon-pairs for chip-scale quantum information processing", Proc. SPIE 7465, Quantum Communications and Quantum Imaging VII, 74650L (26 August 2009); https://doi.org/10.1117/12.824196

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