We describe an optical system for the generation of unconditional polarization-entangled photons based on multiple quantum interference effects with a detection scheme to estimate the experimental fidelity of generated entangled photons.
Terashima, H., Sato, Y., Kobayashi, S., Tsubakiyama, T., Nozaki, R., Kubo, S., Osada, T., Sanaka, K. A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference. J. Vis. Exp. (151), e59705, doi:10.3791/59705 (2019).