Optimising energy consumption in Nano-cryptography: Quantum cellular automata-based multiplexer/demultiplexer design

Future global communications will depend heavily on nano-communication networks, which use ultra-low power nano-circuits to transmit data efficiently at very high rates. An essential part of distributed communication networks is the circuit-switched network, which distributes the input signal among several users. For designing nanoscale digital circuits, Quantum Cellular Automata technology (QCA) emerges as a formidable contender against the established complementary metal-oxide-semiconductor (CMOS) technology for low-power devices. The authors endeavour to achieve an efficient design for multiplexer and demultiplexer switching circuits. The designed multiplexer and demultiplexer have 15 cells with an area of 0.02 μm² and a latency of 0.5 clock cycles. The authors assess the energy dissipation and temperature impacts for both multiplexer and demultiplexer circuits. The novel design of switch circuits facilitates the sharing of a single communication link across multiple devices at the nano-scale.