Stephen
Bartlett
Waks, E. ., Diamanti, E. ., Sanders, B. ., Bartlett, S. ., & Yamamoto, Y. . (2004). Direct Observation of Nonclassical Photon Statistics in Parametric Down-Conversion. Phys. Rev. Lett., 92, 113602. http://doi.org/10.1103/PhysRevLett.92.113602 (Original work published 2024)