Observation of switching in a quantum-dot cellular automata cell
Gary H. Bernstein, Islamshah Amlani, Alexei O. Orlov, Craig S. Lent, Gregory L. Snider · Nanotechnology · 1999
The notion of quantum-dot cellular automata (QCA) as a possible replacement paradigm for conventional transistor-based logic is reviewed. Experiments using metal tunnel structures demonstrating a functional QCA cell are presented. It is shown that single electron tunnelling transistors used as electrometers verify proper switching of the QCA cell. Additionally, we provide evidence for a QCA cell switching frequency of 14 MHz, and a calculated upper limit of more than 5 GHz.