  Non-Hermitian optics, mostly known as 'Parity-time symmetric optics', is
considered as one of the frontiers areas of research in optical sciences at
present. This area is largely inspired by the so-called non-Hermitian quantum
physics. While the non-Hermitian quantum mechanics is yet to be accepted
widely, parity-time symmetric optics is already a craze among physicists with
many experimental results and demonstrations to its support. In this article,
keeping under graduate students in mind, in particular, we are giving a brief
introduction to this promising area of research in physics.
