A.
L.
Pintar
Levine, Z. H., Glebov, B. L., Pintar, A. L., & Migdall, A. L. (2015). Absolute calibration of a variable attenuator using few-photon pulses. Optics Express, 23, 16372–16382. http://doi.org/10.1364/oe.23.016372