Jia-Hao Zou

Oct 24, 2023 | opg.optica.org | Jia-Hao Zou |Hai-Feng Zhang |Jun-Yang Sui |Qi Chen

An arithmetic logic unit (ALU) based on the metastructure (MS) with coherent absorption (CA) is proposed in this Letter. The ALU can perform AND and exclusive OR logical operations at the same frequency point. So it can be regarded as an optical half-adder. By controlling the chemical potential of graphene and the phase difference of coherent electromagnetic waves (EWs), two different binary numbers are input into the ALU.