Photon nonlinear mixing in subcarrier multiplexed quantum key distribution systems
J. Capmany · Optics Express · 2009
We provide, for the first time to our knowledge, an analysis of the influence of nonlinear photon mixing on the end to end quantum bit error rate (QBER) performance of subcarrier multiplexed quantum key distribution systems. The results show that negligible impact is to be expected for modulation indexes in the range of 2%.