Saturday, October 25, 2008

Division of labour

Scitechdaily on using atomic nuclei for long-term memory, and electrons for working memory.
How do you isolate a quantum bit from a noisy environment to protect the delicate quantum information, while at the same time allowing it to interact with the outside world so that it can be manipulated and measured?
Crucially, the information stored in the nucleus had a lifetime of about 1 and 3/4 seconds, ex-ceeding a recently calculated target for quantum computing in silicon beyond which known error correction techniques could then protect the data for an arbitrarily long period of time.

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