Photonic Cryptographic Circuits for All-Photonics Network

Abstract

Recently, an optical information processing infrastructure has been developed to achieve low-latency, high-capacity communication and high-speed, high-performance information processing with low power consumption. Security functions are required to implement using an optical technology for the infrastructure. Therefore, a study has begun to be proceeded. In this article, we introduce photonic cryptographic circuits using photonic logic gates to construct a nonlinear function of block ciphers. We present silicon photonic chips of the cryptographic function and their experimental evaluations. We also present an overview of the realization of cryptographic circuits using the optical technology.