It is shown how to use a lenticular fringe detector as a complex homodyne receiver working ratiometrically in a photon counting mode. While analog outputs for both quadrature components are available simultaneously it is argued that recursive digital filtering confers the benefits of photon antibunching. A successful hardware implementation of the polar innovations form of such a digital filter is also demonstrated.
© 1988 Optical Society of America
Lawrence Mertz, "Complex homodyne reception from discrete photons," Appl. Opt. 27, 3429-3432 (1988)