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Proceedings Paper

Optical logic: an overview
Author(s): H. John Caulfield
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Paper Abstract

Progress of optical logic has been anything but uniform or even monotonic. The hope for “all optical computers” was largely abandoned after devastating critiques by Keyes. Over time, optical logic transformed into a very viable niche activity by the needs of optical communication for “all optical” logic and the advent of a critical component: the SOA or Semiconductor Optical Amplifier. I argue that a new phase in this uneven history can be defined - linear (single photon, not multiple entangled photon) quantum optical logic. These can perform conservative, reversible logic operations without energy or time penalties, but cascading requires the irreversible act of measurement, so only single devices or single layers can deliver those advantages.

Paper Details

Date Published: 25 May 2005
PDF: 4 pages
Proc. SPIE 5815, Quantum Information and Computation III, (25 May 2005); doi: 10.1117/12.606456
Show Author Affiliations
H. John Caulfield, Fisk Univ. (United States)

Published in SPIE Proceedings Vol. 5815:
Quantum Information and Computation III
Eric J. Donkor; Andrew R. Pirich; Howard E. Brandt, Editor(s)

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