Squeezing is good at low information rates
Masaki Sohma, Osamu Hirota · Physical Review A · 2002
We evaluate the performance of a squeezed-state channel, in which classical information is conveyed by squeezed states. The evaluation is carried out by calculating the expurgated lower bound for the reliability function. As a result, we find that using squeezed states improves the channel performance near the zero information rate.