Most previous stopped-light demonstrations have used gases rather than solid materials. Light had previously been stopped in a solid (yttrium-silicate doped with atoms of praseodymium), but only for a few milliseconds.
Although the efficiency of the storage was low in this experiment, the researchers believe they can improve the efficiency by using a thicker sample and by increasing the concentration of praseodymium in the sample. The technique could be useful in quantum information processing applications such as quantum computers.
Sources
J. J. Longdell, E. Fraval, M. J. Sellars, and N. B. Manson. "[1]" — Physical Review Letters, August 2, 2005
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Note that some listed sources or external links may no longer be available online due to age.
