An electromagnetic logic metastructure realizing half addition and half subtraction operations based on a virtual polarizer.

This article presents a theoretical study of an electromagnetic logic metastructure (ELM) based on a virtual polarizer that performs half addition and half subtraction operations by manipulating electromagnetic wave (EW) polarizations. Utilizing anisotropic materials—liquid crystal and plasma—the ELM exploits distinct propagation characteristics in transverse electric (TE) and transverse magnetic (TM) modes, where applied electric and magnetic fields, along with phase differences, serve as logic inputs. The device achieves sharp transmission and absorption peaks corresponding to logical outputs, with high-quality factors (Q up to 1.2 × 10^4) and strong signal-to-noise ratios (SNR at least 28 dB), enabling simultaneous AND and XOR logic operations for arithmetic processing. Numerical simulations using High-Frequency Simulator Structure (HFSS) software support the theoretical results, highlighting the ELM's potential for faster and more accurate electromagnetic logic operations compared to traditional devices. This work advances electromagnetic logic by integrating coherent perfect absorption (CPA) and virtual polarizer concepts, offering novel approaches for future high-speed logical networks and applications involving anisotropic materials.