  Masking of data is a method to protect information by shielding it from a
third party, however keeping it usable for further usages like application
development, building program extensions to name a few. Whereas it is possible
for classical information encoded in composite quantum states to be completely
masked from reduced sub-systems, it has to be checked if quantum information
can also be masked when the future possibilities of a quantum computer are
increasing day by day. Newly proposed no-masking theorem [Phys. Rev. Lett. 120,
230501 (2018)], one of the no-go theorems, demands that except for some
restricted sets of non-orthogonal states, it's impossible to mask arbitrary
quantum states. Here, we explore the possibility of masking in the IBM quantum
experience platform by designing the quantum circuits and running them on the
5-qubit quantum computer. We choose two particular states considering both the
orthogonal and non-orthogonal basis states and illustrate their masking through
both the theoretical calculation as well as verification in the quantum
computer. By quantum state tomography, it is concluded that the experimental
results are collected with high fidelity and hence the possibility of masking
is realized.
