Heisenberg’s uncertainty,
gives random numbers certainly,
that will be used to generate,
a freshly modulated quantum state.

A little photon populates
the aforementioned quantum state,
to travel high and oh so far,
beneath the glass and to the stars.

It propagates until it hits,
a detector with which it fits,
to be detected and collapse,
into data that makes sense.

However, if it doesn’t,
it was Eve ‘ that caused trouble,
but alas! she can be caught,
because QKD works and is not for naught!

We wish you all a Merry Christmas and peaceful holidays
from the Quantum Information Processing Group & the InfiniQuant team,
at the Max Planck Institute for the Science of Light in Erlangen, Germany