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Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Multipulse excitation of photon echo and principles of parallel functioning of optical echo-processors

Ivan I. Popov, M. Yu. Kokurin, Vera T. Nigmatullina

Published Mar 3, 2008• 0 citations
Publisher

Abstract

The phenomenon of multipulse photon echo in two-level quantum systems is used to construct a conceptual sketch of a device which involves two optical coprocessors operating in parallel. The device is designed for accelerated solution of NP-hard problems of discrete analysis. As an example, the application of coprocessors to the trinomial knapsack problem is considered in detail. The coprocessors work with sequences of exciting laser pulses of different amplitude-time forms and polarizations.

DOI
10.1117/12.801686

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The phenomenon of multipulse photon echo in two-level quantum systems is used to construct a conceptual sketch of a device which involves two optical coprocessors operating in parallel. The device is designed for accelerated solution of NP-hard problems of discrete analysis. As an example, the application of coprocessors to the trinomial knapsack problem is considered in detail. The coprocessors work with sequences of exciting laser pulses of different amplitude-time forms and polarizations.
The photon echo application for optical digital processing of discrete images by the method of managing operators was examined. Photon echo is the pulse of light which is emitted spontaneously from a system of atoms previously irradiated by two or more coherent light pulses with length and power of 102divided by10-1 ps and 104divided by105 kW, respectively. These systems of resonant atoms are crystals with various paramagnetic activators. By using photon echo, the resonant systems are able to store and retrieve wave-front and temporal form of one of the excitation pulses. The photon echo application for information processing allows one to solve a number of problems with high efficiency. Different photon echo generating conditions can be utilized practically in all processor components, which creates certain prospects for using this effect in optical computing purposes.