Optical logic: an overview

H. John Caulfield

doi:10.1117/12.606456

25 May 2005 Optical logic: an overview

H. John Caulfield

Proceedings Volume 5815, Quantum Information and Computation III; (2005) https://doi.org/10.1117/12.606456
Event: Defense and Security, 2005, Orlando, Florida, United States

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.

Citation Download Citation

H. John Caulfield "Optical logic: an overview", Proc. SPIE 5815, Quantum Information and Computation III, (25 May 2005); https://doi.org/10.1117/12.606456

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