No abstract

This paper presents the Collapsed Bennett Layout, a general purpose floorplan for reversible quantum-dot cellular automata (QCA) circuits. In order to exploit the full density and speed potential of emerging nanodevices, the principles of reversible computing need to be incorporated into the design of nanoscale circuits and systems. The Collapsed Bennett Layout implements Bennett's algorithm in hardware, allowing any arbitrary logic function to be implemented reversibly in QCA.

This work is the first to describe how to go about designing a reversible QDCA system. The design space is substantial, and there are many questions that a designer needs to answer before beginning to design. This document begins to explicate the tradeoffs and assumptions that need to be made and offers a range of approaches as starting points and examples. This design guide is an effective tool for aiding designers in creating the best quality QDCA implementation for a system. 3