Spectral correlation and interference in continuous-wave non-degenerate photon pairs at telecom wavelengths

Published: March 14, 2017


Paulina S. Kuo, Thomas Gerrits, Varun B. Verma, Sae Woo Nam


We have developed an entangled photon pair source based on a domain-engineered, type-II periodically poled lithium niobate crystal that produces signal and idler photons at 1533 nm and 1567 nm. We characterized the spectral correlations of the generated entangled photons using fiber-assisted signal-photon spectroscopy. We observed interference between the two down-conversion paths after erasing polarization distinguishability of the down-converted photons. The observed interference signature is closely related to the spectral correlations between photons in a Hong-Ou-Mandel interferometer. These measurements suggest good indistinguishability between the two downconversion paths, which is required for high entanglement visibility.
Volume: 10118
Issue: 10
Conference Dates: January 29-February 2, 2017
Conference Location: San Francisco, CA
Conference Title: SPIE Photonics West
Pub Type: Conferences
Created March 14, 2017, Updated November 10, 2018