perradiance and self-induced transparency will resume. The more condensed the nonlinear optical medium becomes, the more frequently such quantum mechanical cooperative phenomena of coherent photons take place.
The authors wish to thank Professors H. Umezawa, Y. Takahashi, L. M. Ricciardi and C. I. J. M. Stuart for providing us with a quantum theoretical framework for living matter. They also wish to thank Professors K. H. Pribram and S. Hameroff for active collaboration.
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