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.
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References
Landauer R (1961) Irreversibility and Heat Generation in the Computing Process. IBM J Res Dev 5:183
Bennett CH, Landauer R (1985) The fundamental physical limits of computation. Sci Am 253:48–56
Keyes RW (2001) Fundamental limits of silicon technology. Proc IEEE 89:227–239
Caulfield HJ, Soref RA, Qian L, Zavalin A, Hardy J (2007) Generalized optical logic elements—GOLEs. Opt Commun 271:365–376
Qian L, Caulfield HJ (2006) What can we do with a linear optical logic gate? Inf Sci 176:3370–3392
Caulfield HJ, Vikram CS, Zavalin A (2006) Optical logic redux. Optik 117:199–209
Hardy J, Shamir J (2007) Optics inspired logic architecture. Opt Express 15:150–165
Shamir J, Caulfield HJ, Miceli W, Seymour RJ (1986) Optical computing and the Fredkin gates. Appl Opt 25:1604–1607
Feynman RP (1985) Quantum mechanical computers. Opt News 11:11–20
Zavalin AI, Caulfield HJ, Vikram CS (2010) Implementing minimal clock skew directed logic. Optik 121:1300–1308
Zeng S, Zhang Y, Li B, Pun EY-B (2010) Ultrasmall optical logic gates based on silicon periodic dielectric waveguides. Photonics Nanostruct Fundam Appl 8:32–37
Kulcke W, Kosanke K, Max E, Habegger MA, Harris TJ, Fleisher H (1966) Digital light deflectors. Proc IEEE 54:1419–1429
Soref RA, McMahon DH (1966) Optical design of Wollaston-prism digital light deflectors. Appl Opt 5:425–434
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Caulfield, H.J., Zavalin, A. & Qian, L. Zero-energy optical logic: can it be practical?. J Supercomput 62, 681–688 (2012). https://doi.org/10.1007/s11227-011-0583-7
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DOI: https://doi.org/10.1007/s11227-011-0583-7