Abstract

Up to this point, photon-entanglement sources suffered from the compromise of being either compact or efficient, but not both at the same time [1–6]. Our new concept of creating entanglement [7] combines most of the advantages of the various existing schemes. The setup offers high coupling efficiencies due to its collinear design and is still as compact and simplistic as a BBO source [1], requiring only one crystal with uniform poling periodicity, pumped from only one direction.

© 2017 IEEE