Application of magneto-optical logic devices for cryptographic processing in optical communication systems

This paper presents a study of magneto-optical waveguide logic gates for optical communication systems. Simple logic operations are implemented by modulating photon states in a material through applied magnetic fields. By controlling the magnetic field's amplitude and orientation relative to light propagation, selecting polarizer/analyzer alignment, and configuring waveguides, we designed logic gates including qubit-compatible models that overcome the low coherence times typical of optical qubits. Optical qubits are promising candidates for quantum information processing and data transmission. For cryptographic applications using Vernam encryption, we developed an XOR logic gate simulator based on magneto-optical principles. Experimental validation employed ASCII encoding and text encryption/decryption algorithms, demonstrating successful cryptographic processing of confidential data over fiber-optic lines. The results show that magneto-optical qubit control mechanisms enable modeling diverse waveguide-based logic gates, including a half adder performing parallel XOR and AND operations. These devices facilitate novel information processing and transmission architectures.