  We investigate the scrambling of information in a hierarchical star-topology
system using out-of-time-ordered correlation (OTOC) functions. The system
consists of a central qubit directly interacting with a set of satellite
qubits, which in turn interact with a second layer of satellite qubits. This
particular topology not only allows convenient preparation and filtering of
multiple quantum coherences between the central qubit and the first layer but
also to engineer scrambling in a controlled manner. Hence, it provides us with
an opportunity to experimentally study scrambling of information localized in
multi-spin correlations via the construction of relevant OTOCs. Since the
measurement of OTOC requires a time evolution, the non-scrambling processes
such as decoherence and certain experimental errors create an ambiguity.
Therefore, the unambiguous quantification of information scrambling requires
suppressing contributions from decoherence to the OTOC dynamics. To this end,
we propose and experimentally demonstrate a constant time protocol which is
able to filter contribution exclusively from information scrambling.
