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Carrying
out one promising scheme to build quantum
computer chips means embedding individual
atoms in silicon. But once that's accomplished,
you still need a way to read the quantum bits.
A physics experiment that measures very cold
electrons could be the key.
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Study
shows fiber has room to grow
Cramming lots of data signals onto a fiber-optic
cable results in signals interfering with each other
in random ways, much like the chatter of a crowded
cocktail party. Researchers find there's plenty
of room to expand if you make the signals strong
enough to be heard but not drown each other out.
Search
tool builds encyclopedia
For most Web search engines, the idea of packaging
results boils down to little more than slapping
a banner ad over them. One research team aims to
make the search experience more like cracking open
an encyclopedia.
Positioned
atoms advance quantum chips
Building quantum computer chips means positioning
particles as precisely as physically possible. Poking
holes in a hydrogen film puts phosphorus atoms where
researchers want them.
Electron
beam welds nanotubes
Once just a nuisance, the buildup of hydrocarbons
on carbon nanotubes turns out to be a ready-made
solder when you zap the tubes with a beam of electrons.
The result is a sturdy, electrically conductive
weld.
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