In this Letter, telecom-band degenerate-frequency photon pairs are generated in a specific mode of a silicon microring cavity by the nondegenerate spontaneous four-wave mixing (SFWM) process, under two continuous-wave pumps at resonance wavelength of two different cavity modes. The ratio of coincidence to accidental coincidence is up to 100 under a time bin width of 5 ns, showing their characteristics of quantum correlation. Their quantum interference in balanced and unbalanced Mach–Zehnder interferometers is investigated theoretically and experimentally, and the results show potential in quantum metrology and quantum information.
© 2014 Optical Society of America
Original Manuscript: January 10, 2014
Revised Manuscript: March 17, 2014
Manuscript Accepted: March 18, 2014
Published: April 15, 2014
Yuan Guo, Wei Zhang, Shuai Dong, Yidong Huang, and Jiangde Peng, "Telecom-band degenerate-frequency photon pair generation in silicon microring cavities," Opt. Lett. 39, 2526-2529 (2014)