Reversibility and energetics in optical computing

Hj, Caulfield; Shamir, Joseph; Je, Ludman; Greguss, Pal

doi:10.1364/ol.15.000912

Cited by 7 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We must somehow skip (in terms of measurable "garbage" bits) most of the steps. Only quantum computing [3][4][5][6][7][8][9] can do this.…”

Section: An Absolutely-creative Subconsciousmentioning

confidence: 99%

“…In recent articles we have shown that some optical processors are uniquely and truly quantum mechanical [3][4][5][6][7][8][9]. They can be so constructed that they perform most of their computations virtually in the wave domain before we read the results photons in the particle domain.…”

Section: Wave Particle Duality Processorsmentioning

confidence: 99%

“…We must somehow skip (in terms of measurable "garbage" bits) most of the steps. Only quantum computing [3][4][5][6][7][8][9] can do this.We show in the following section a quantum optical computer which not only does this but uses quantum indeterminacy (unpredictable in principle) to make the stochastic choices. …”

mentioning

confidence: 99%

See 2 more Smart Citations

The computer subconscious

Caulfield

1995

Kybernetes

Self Cite

View full text Add to dashboard Cite

Our capacity for deceiving ourselves about the operation of our brain is almost limitless, mainly because we can be aware of only a minute fraction of what goes on in our head. That is why much of philosophy has been barren for more than 2,000 years and is likely to remain so until philosophers learn to understand the language of information processing (Francis H.C. Crick, 1979). IntroductionTuring machines are fully equivalent to large lookup tables. Given an input (conventionally divided into program and data), the output is determined. Indeed information is always lost or dissipated. This is generally called information processing. It is fully deterministic.We want to explore information creation. This is not generally considered a viable task for a computer. We will show that it is possible to build: q absolutely creative computers whose probably-useful output is unpredictable even in principle; q effectively creative computers whose probably-useful output is unpredictable in practice. Both are modelled on the classic four-step creativity process described by Poincaré, Haddamard and numerous other highly creative mathematicians and scientists. No claim of biological plausibility of this model is made. Rather, we claim that it works like the best reports of human creativity from the most creative humans and that it does create useful information.The four-step model Various terminologies have been used for the four-step model. They are readily translatable into these:Step 1: problem choice/study. We do not solve random problems consciously or unconsciously. We choose problems. We consciously study them. We prepare ourselves to recognize solutions should they occur to us. We gather information. We try to solve problems.qStep 2: incubation. By hypothesis, this step is subconscious, so there is little we can say about it -unless, of course, we could model it and show that our model works like our subconscious appears to.The computer subconscious 47 qStep 3: breakthrough. We suddenly have an "inspiration". We say "ah ha" or "eureka". Again, without a model, this is mysterious.qStep 4: development. Usually our breakthrough requires some sort of conscious effort before we are ready to share it. ModelIn the model subconscious, there are many modules each assigned to solve the problem using available information and concepts strung together in various ways. Potential solutions are evaluated and the better ones share and/or exchange information. Poorer solutions are replaced by better ones. The population of would-be solutions evolves. If we are lucky, one solution eventually exceeds our threshold of goodness and becomes "conscious". Our ideas require "development", because they are not consciously connected to prior work. Mathematicians and scientists then: q work backward from the now-"known" answer to the accepted facts and theories;q publish the simple forward path. No wonder so many great inventions look "trivial". The path we publish is a path we could have taken, but never took. Our subconscious took a foreverun...

show abstract

“…We must somehow skip (in terms of measurable "garbage" bits) most of the steps. Only quantum computing [3][4][5][6][7][8][9] can do this.…”

Section: An Absolutely-creative Subconsciousmentioning

confidence: 99%

Section: Wave Particle Duality Processorsmentioning

confidence: 99%

See 1 more Smart Citation

The computer subconscious

Caulfield

1995

Kybernetes

Self Cite

View full text Add to dashboard Cite

show abstract

“…In recent papers an interesting new concept has been proposed by Caulfield et al with regard to the computing capability of optical processors, [Caulfield and Shamir 1990;Caulfield, Shamir, Ludman and Greguss 1990]. The kTbarrier mentioned earlier is claimed not to be a real barrier, but can be much smaller than this, for the following reasons.…”

Section: Reversibility and Wave Particle Duality Processorsmentioning

confidence: 99%

Multidimensional processing: Nonlinear optics and computing

Fiddy

1991

Multidim Syst Sign Process

View full text Add to dashboard Cite

Abstract. The purpose of this paper is to overview some of the trends and directions in computing, as pertbrmed by optical hardware, resulting from the demands made by mtfltidimensional signal processing. Optical information processing or opticaJ computing is a vast field and some of the more significant issues are discussed here. We discuss future developments and architectural consequences for such potentially highly parallel and interconnected processing systems. Particular emphasis is placed on energy and speed considerations, associated with the use of nonlinear optical materials in optical systems and devices.

show abstract

Multidimensional Processing: Nonlinear Optics and Computing

Fiddy¹

1991

Optical Signal Processing

View full text Add to dashboard Cite

Reversibility and energetics in optical computing

Cited by 7 publications

References 15 publications

The computer subconscious

The computer subconscious

Multidimensional processing: Nonlinear optics and computing

Multidimensional Processing: Nonlinear Optics and Computing

Contact Info

Product

Resources

About