Two Dimensional QCA XOR Logic Using NNI Gate
Young-Won You, Jun‐Cheol Jeon · International Journal of Control and Automation · 2017
Quantum-dot Cellular Automata (QCA) as a promising nanotechnology to implement digital computing architecture at nano-scale.The QCA based circuits have been implemented and proposed to QCADesigner.XOR gate is an important in encryption operation and error detection.Previous XOR gate used a multi-layer structure in QCA.Multi-layer wire crossing is one of wire crossing techniques.By dividing coplanar circuit to three or more layer, it can reduce area consumption in QCA.However, multi-layer method is difficult to fabricate and has a noise problem in intersection cell.In this paper, we propose two dimensional XOR gate by using Nand-Nor-Inverter (NNI) gate.An NNI gate is used as one of universal gate which can simplify to logic circuits.The proposed design is simulated in QCADesigner tool version 2.0.3.