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| Teleporting
goes distance
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Quantum
teleportation, the seemingly magical act of
capturing the essence of a particle and re-creating
it, usually on the other side of a lab bench,
has been wowing scientists for several years.
An experiment that uses fiber-optic lines
goes way beyond laboratory walls. The technique
could be used to extend unbreakable quantum
cryptography to long distances.
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Scheme
smooths parallel processing
Some problems are so large that solving them requires
using many computers at once, which itself is a
tough computational task. Nature provides a hint
about how to coordinate lots of computers -- watch
how crystals grow. The math involved could help
keep parallel processors humming. It's all about
keeping virtual time.
Butterflies
offer lessons for robots
Butterflies harbor a host of tricks when it comes
to flying. That fluttery motion reflects complex
aerodynamics, which scientists have captured in
detail using smoke and digital cameras. Tapping
these tricks should allow researchers to improve
tiny flying robots.
Social
networks sturdier than Net
A study showing that social networks are different
from their technological and biological cousins
means your network of family and friends is probably
more resilient than the network of computers that
makes up the Internet. This doesn't bode well, however,
for fighting diseases or for protecting the Net.
Logic
scheme gains power
A computing architecture that plays ping-pong with
individual electrons promises to enable fast, low-power
computers. The trick to making the scheme work is
keeping the system's signals from fading. The system's
heartbeat provides the necessary boost.
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