Quantum Cellular Neural Networks
  We have previously proposed a way of using coupled quantum dots to construct digital computing elements - quantum-dot cellular automata (QCA). Here we consider a different approach to using coupled quantum-dot cells in an architecture which, rather that reproducing Boolean logic, uses a physical near-neighbor connectivity to construct an analog Cellular Neural Network (CNN). 
Geza Toth, Craig S. Lent, P. Douglas Tougaw, Yuriy Brazhnik, Weiwen   Weng, Wolfgang Porod, Ruey-Wen Liu, Yih-Fang Huang