Abstract
Today's computers transfer information via currents and thus via charge transfer. One alternative avenue utilizes transfer of a polarization state in a chain or array of so-called cellular automata. Such an arrangement has the advantage of being able to perform logical functions at a very small spatial scale, but many technical challenges remain before such an approach can lead to a practical application in computer technology. Smith (page [274][1]) discusses recent advances in performing simple logical functions with arrays of cellular automata (Amlani et al. , page [289][2]). [1]: http://www.sciencemag.org/cgi/content/short/284/5412/274 [2]: http://www.sciencemag.org/cgi/content/short/284/5412/289
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