| Author(s): |
Jun Chen; Aaron Pearlman; Alexander E. Ling; Jingyun Fan; Alan L. Migdall; |
| Title: |
Waveguide source of correlated photon pairs for chip-scale quantum information processing |
| Published: |
August 26, 2009 |
| 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: |
SPIE Conference Proceedings |
| Volume: |
7465 |
| Pages: |
13 pp. |
| Keywords: |
spontaneous parametric down conversion; correlated photons; waveguide; joint spectrum |
| Research Areas: |
Quantum Optics, Quantum Information, Entangled Photons, Quantum Devices, Single Photon Sources, Squeezing, Correlated Photon Radiometry |
| PDF version: |
 Click here to retrieve PDF version of paper (786KB) |
