Multiple-bit long-term data storage by backward-stimulated echo in Eu(3+):YAlO(3).
We have observed faithful storage and retrieval of multiple data pulses for up to 5 h in Eu(3+):YAlO(3) crystal by using the backward-stimulated echo. We find no loss of echo fidelity as the storage time is increased. Furthermore the lack of cross talk between the input data pulses suggests that faithful long-term storage and retrieval of a large number of data pulses are possible. Our measured echo-storage lifetime of 3.8 h is to our knowledge the longest reported thus far.
Kim
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MK
Kachru
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