  Optical computing has recently attracted a great deal of interest as it
offers the ability to process data in a parallel manner. In this report, an
optical computing system based on a metamaterial structure made of graphene is
designed and demonstrated. It is shown that the proposed structure is able to
do different operations such as taking derivative, and integration of an
incident field. In addition to this, it is shown that the proposed structure is
reconfigurable due to the possibility of tuning the surface conductivities of
the graphene flakes. The proposed configuration not only goes beyond the major
restriction of traditional electronic computers, but also provides a dynamic
operation.
