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

Abstract 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 μm 2 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.