Building Blocks for Electron Counting Arithmetic

The ability to control the transport of individual electrons in SET technology introduces a broad range of new possibilities and challenges for implementing computer arithmetic circuits. In this paper, we first briefly discuss the concept of electron counting based arithmetic. Second, we introduce the types of building blocks that are required in order to implement this concept in SET technology. These blocks can be divided in three function categories: encoding binary operands as quantities of charge, controlling charge transport, and re-converting quantities of charge to binary results. Finally, we propose possible SET based implementations of these building blocks, and demonstrate the designs by means of simulation. Keywords— single electron technology, SET, electron counting arithmetic