Quantum-dot cellular automata demultiplexer with minimum design costs with energy dissipation analysis and physical proof for reliable nano-communication systems

Quantum-dot cellular automata (QCA) has recently been highlighted as a next-generation circuit design technology that can replace existing CMOS technology due to its advantages of maintaining very low energy consumption, small area requirements, and low latency. In this study, we propose a demultiplexer (DeMux), which is essential for safe data distribution in reliable communication network and signal routing. Our DeMux is designed based on single-layer cell interaction and maximizes area utilization while using the minimum number of cells and low area. We show that the proposed unit DeMux is easily scalable using multi-layer crossovers. The proposed cell interaction-based operation was physically verified using the potential energy of electrons, and all circuits were simulated using QCADesigner and QCADesigner-E to confirm normal operation and excellent performance. The design cost of the proposed DeMux is measured in two ways: design cost using area and delay, and design cost using energy dissipation and delay.