Quantum Dot Cellular Automata (QCA)is an alternative to CMOS technology. The other technologies proposed by researchers are FINFET, CNTs and MTJ to reduce scalability of CMOS devices. Using Quantum Dot Cellular Automata, the low power, extremely dense circuits are designed. https://www.theijire.com/archives/paper-details?paperid=26&papertitle=performance-analysis-of-pla-spendingquantum-dot-cellular-automata