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Journal of Molecular Structure

Zero-phonon lines as the cornerstone of single impurity molecule spectroscopy and persistent spectral hole burning data storage and processing

Karl K. Rebane

Published Mar 1, 1995• 0 citations
Publisher
DOI
10.1016/0022-2860(95)08557-c

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Spectroscopies of matrix isolated species and impurity activated solids are close relatives. Both are among the well developing chapters of solid state spectroscopy and optics. In this paper I am trying to give very brief overview what has been achieved in science and applications of impurity activated solids based on zero-phonon lines (ZPLs) in optical data storage and processing. I would like to show that the latter comprises via persistent spectral hole burning time-and-space domain holography in a certain meaning also the "stopping of light". ZPLs are beginning to play a role in the approaches to optical quantum computing.

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Brief review of zero-phonon lines, persistent spectral hole burning (PSHB) and its applications is given. The provided by PSHB additional dimension - the spectral one in optical data storage allows in principle to get densities up to 1012 bit cm−2 or 1016 bit cm−3. In both cases an 1016 cm−3 cell comprising on average only 100 impurity molecules is involved to store a bit. It is a two small amount because of fluctuations in the distribution of impurities over the cells. Parallel processing and distributed data storage, realized in PSHB holography and optical modelling of neural networks, are prospective to utilize the full capacity of PSHB storage and processing.
Spectroscopies of matrix isolated species and impurity activated solids are close relatives. Both are among the well developing chapters of solid state spectroscopy and optics. In this paper I am trying to give very brief overview what has been achieved in science and applications of impurity activated solids based on zero-phonon lines (ZPLs) in optical data storage and processing. I would like to show that the latter comprises via persistent spectral hole burning time-and-space domain holography in a certain meaning also the "stopping of light". ZPLs are beginning to play a role in the approaches to optical quantum computing.