Polarization-entangled photon source based on the fiber loop configuration in the telecom wavelength band
Satoru Odate, Akio Yoshizawa, Hidemi Tsuchida · 2007
We demonstrated a source of the polarization-entangled state by using spontaneous parametric down conversion in the telecom wavelength band. We observed the visibility more than 85 % without the subtraction of the accidental coincidence counts, and obtained the visibility of nearly 100 % with the subtraction of the accidental coincidence counts.