polychromatic pump and polychromatic homodyne detection technologies (see Fig. 1c) produce multimode squeezed-vacuum optical frequency combs below the threshold of parametric oscillation ...

The homodyne method uses a local oscillator that is tuned to the carrier frequency of the desired station and mixed with the incoming signal to boost the power of that frequency before being filtered.

Review of quantum fields; quantization of the electromagnetic field; photodetection theory; direct, homodyne and heterodyne detection; squeezed and photon-number state generation; application to ...