Philippe
Eberhard
Kwiat, P. ., Waks, E. ., White, A. ., Appelbaum, I. ., & Eberhard, P. . (1999). Ultrabright source of polarization-entangled photons. Phys. Rev. A, 60, R773—R776. http://doi.org/10.1103/PhysRevA.60.R773 (Original work published 2024)