Ma, Lijun Rakher, Matthew T. Stevens, Martin J. Slattery, Oliver Srinivasan, Kartik Tang, Xiao Media 1: Temporal correlation of photons following frequency up-conversion Originally published in Optics Express on 23 May 2011 (oe-19-11-10501) Optics Express;media;Temporal;photon;frequency up-conversion;23 May 2011;correlation;oe 2011-05-23
    https://opticapublishing.figshare.com/articles/media/Media_1_Temporal_correlation_of_photons_following_frequency_up-conversion/4942415
10.1364/OE.19.010501.m001