  Quantum finite frequency noise is one of fundamental aspects in quantum
measurements performed during quantum information processing where currently
Majorana bound states offer an efficient way to implement fault-tolerant
quantum computation via topological protection from decoherence or unitary
errors. Thus a detailed exploration of Majorana finite frequency noise spectra,
preferably in a nonequilibrium device, is a timely challenge of fundamental
importance. Here we present results on finite frequency differential noise that
is the derivative of the noise with respect to the frequency. This quantity has
universal units of $e^2$ and scans in high detail all peculiarities of the
Majorana noise clearly demonstrating its universal finite frequency features.
In particular, we provide photon absorption spectra on all energy scales and
reveal a rich structure including universal Majorana plateaus as well as
universal Majorana resonances and antiresonances at characteristic frequencies.
Our results are of immediate interest to state-of-the-art experiments involving
quantum noise mesoscopic detectors able to separately measure photon absorption
and emission spectra.
