  Optical atomic clocks based on trapped ions suffer from systematic frequency
shifts of the clock transition due to interaction with blackbody radiation from
the environment. These shifts can be compensated if the blackbody radiation
spectrum and the differential dynamic polarizability is known to a sufficient
precision. Here, we present a new measurement scheme, based on quantum logic
that allows a direct transfer of precision for polarizability measurements from
one species to the other. This measurement circumvents the necessity of
calibrating laser power below the percent level, which is the limitation for
state-of-the-art polarizability measurements in trapped ions. Furthermore, the
presented technique allows to reference the polarizability transfer to
hydrogen-like ions for which the polarizability can be calculated with high
precision.
