  The need set by a computational industry to increase processing power, while
simultaneously reducing the energy consumption of data centers became a
challenge for modern computational systems. In this work, we propose an optical
communication solution, that could serve as a building block for future
computing systems, due to its versatility. The solution arises from Landauer
principle and utilizes reversible logic, manifested as an optical logical gate
with structured light, here represented as Laguerre-Gaussian modes. We
introduced an information encoding technique that employs phase shift as an
information carrier and incorporates multi-valued logic in the form of a
ternary system. In the experimental validation, the free space communication
protocol is implemented to determine the similarity between two images.
Obtained results are compared with their binary counterparts, illustrating
denser information capacity and enhanced information security, which
underscores its capability to transmit and process both quantum and classical
information.
