The Journal of Supercomputing

, Volume 62, Issue 2, pp 681–688

Zero-energy optical logic: can it be practical?

Authors

  • H. John Caulfield
    • Fisk University
  • Andrey Zavalin
    • Fisk University
    • Fisk University
Article

DOI: 10.1007/s11227-011-0583-7

Cite this article as:
Caulfield, H.J., Zavalin, A. & Qian, L. J Supercomput (2012) 62: 681. doi:10.1007/s11227-011-0583-7

Abstract

The thermodynamic “permission” to build a device that can evaluate a sequence of logic operations that operate at zero energy has existed and has been unsolved for about 40 years. Over the last four years, we have explored the possibility of a constructive proof. And we finally have found successfully such a proof and found that lossless logic systems could actually be built. It can only be implemented by optics. In this paper, the problems addressed are speed, size, and error rate. The speed problem simply vanishes, as it was an inference from the implicit assumption that the logic would be electronic. But the other two problems are real and must be addressed if energy-free logic is to have any significant applications. Initial steps in solving the size and error rate are addressed in more detail.

Keywords

Zero-energy logic Conservative logic

Copyright information

© Springer Science+Business Media, LLC 2011