  The growth of modern technological sectors have risen to such a spectacular
level that the blessings of technology have spread to every corner of the
world, even to remote corners. At present, technological development finds its
basis in the theoretical foundation of classical physics in every field of
scientific research, such as wireless communication, visible light
communication, machine learning, and computing. The performance of the
conventional communication systems is becoming almost saturated due to the
usage of bits. The usage of quantum bits in communication technology has
already surpassed the limits of existing technologies and revealed to us a new
path in developing technological sectors. Implementation of quantum technology
over existing system infrastructure not only provides better performance but
also keeps the system secure and reliable. This technology is very promising
for future communication systems. This review article describes the
fundamentals of quantum communication, vision, design goals, information
processing, and protocols. Besides, quantum communication architecture is also
proposed here. This research included and explained the prospective
applications of quantum technology over existing technological systems, along
with the potential challenges of obtaining the goal.
