Discussion Board

Topic: Is NOACH around the corner?

From: tucker
Location: austin, tx
Date: 05/20/2010

Looks like NOACH could become a reality.

http://arstechnica.com/science/news/2010/05/quantum-teleportation-achieved-over-ten-miles-of-free-space.ars

I'm imagining live manipulation of space probes throughout the solar system. How cool would that be!

Re: Is NOACH around the corner?

From: Greg Bear
Date: 05/28/2010

If this is actual quantum entanglement, and the sending of information has been confirmed, then we have something really revolutionary here--instantaneous transmission of information. FTL. Happy to see where this goes!

Re: Is NOACH around the corner?

From: Roald Laurenson
Location: Imperial Beach
Date: 05/30/2010

The abstract linked off the bottom of that article is pretty interesting, and it is about free space transmission, but there seems to be some disconnect in its stating that fiber optics experiments have only gone a few hundred meters.

I remembered some Swiss had done it between villages 20 or so km apart, and the reference is at the end of the Wikipedia article on quantum entanglement.

"A 2008 quantum physics experiment performed in Geneva, Switzerland has determined that the "speed" of the quantum non-local connection (what Einstein called spooky action at a distance) has a minimum lower bound of 10,000 times the speed of light.[13] However, modern quantum physics cannot expect to determine the maximum given that we do not know the sufficient causal condition of the system we are proposing."

Here's the paper with some readable discussion about the experiment, http://arxiv.org/PS_cache/arxiv/pdf/0808/0808.3316v1.pdf, and it did give that thought that we're moving further on this.

For me brought Moving Mars more to mind ;).

And a moment's reflection the Chinese abstract - maybe they don't acknowledge this work because it's published out of the review process? Or just don't know it because of some reason like that? Politics might sometimes be the most 'spooky action at a distance of all, mightn't it?....

A chuckle for us all. We seem to make up the differences anyway. After a while.

Regards,
Clive

Re: Is NOACH around the corner?

From: Roald Laurenson
Location: Imperial Beach
Date: 05/30/2010

Whoops, looks like it wasn't right what I said about not being in a refereed journal.

It's been published in Nature, with a good summary abstract here: http://www.nature.com/nature/journal/v454/n7206/full/nature07121.html.

Still, though, is this the same as being in the 'deep grind' academic journals like the Physica series??

Another way uncertainty creeps into our universe is definitely us ;)

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