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space (spās) n. 1. space beyond the atmosphere of the earth.

prag·ma·tism (prgm-tzm) n. A way of approaching situations or solving problems that emphasizes practical applications and consequences.

Tuesday, June 05, 2007

Quantum Communications

Researchers have sent a cryptographic key 144km (~90 miles) using spooky interaction between entangled quantum particles. This could enable instantaneous communications across the vastness of space.


Anonymous said...

quantum entanglement does not imply faster than light communication, despite much science fiction indicating otherwise.

Dan Schrimpsher said...

True it may not be faster than light (I am not a physicists), but it is still conceptually iinstantaneous and could be really usefull.

Anonymous said...

No it isn't.

Dan Schrimpsher said...

Yes it is. (couldn't resist.) No it isn't instantaneous or really useful?

Look if I have two entanglemented particles and I send one off with my buddy 12 parsecs away and I send a red light past it, as your article suggests, he will receive the red light signal 12 parsecs away, immediately. How is that not instaneous and useful?

Maybe I am missing something.