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Science Section => Science General Discussion => Physics & Cosmology => Topic started by: PopeyesPappy on March 24, 2014, 02:40:39 PM

Title: Spooky action at a distance goes multicast
Post by: PopeyesPappy on March 24, 2014, 02:40:39 PM
QuoteFor the first time, physicists at the Institute for Quantum Computing (IQC) at the University of Waterloo have demonstrated the distribution of three entangled photons at three different locations (Alice, Bob and Charlie) several hundreds of metres apart, proving quantum nonlocality for more than two entangled photons.

The findings of the experiment, Experimental Three-Particle Quantum Nonlocality under Strict Locality Conditions, are published in Nature Photonics today.

Once described by Einstein as "spooky action at a distance", this three-photon entanglement leads to interesting possibilities for multi-party quantum communication.

Nonlocality describes the ability of particles to instantaneously know about each other's state, even when separated by large distances. In the quantum world, this means it might be possible to transfer information instantaneously â€" faster than the speed of light. This contravenes what Einstein called the "principle of local action," the rule that distant objects cannot have direct influence on one another, and that an object is directly influenced only by its immediate surroundings.

http://phys.org/news/2014-03-door-multi-party-quantum.html
Title: Re: Spooky action at a distance goes multicast
Post by: Jason78 on March 24, 2014, 03:24:38 PM
3 way entanglement?

:D
Title: Re: Spooky action at a distance goes multicast
Post by: stromboli on March 24, 2014, 03:31:58 PM
Quote from: Jason78 on March 24, 2014, 03:24:38 PM
3 way entanglement?

:D

Photons got personal secretaries.
Title: Re: Spooky action at a distance goes multicast
Post by: AllPurposeAtheist on March 24, 2014, 04:08:51 PM
I wonder if they can fix sprints network because right now it's slow as hell.
Title: Re: Spooky action at a distance goes multicast
Post by: aitm on March 24, 2014, 06:48:25 PM
soooo...scotties time warp equation might get them back to the bridge of the Enterprise in the nick of time!!
Title: Re: Spooky action at a distance goes multicast
Post by: stromboli on March 24, 2014, 06:58:34 PM
Yeah, now we're getting into the Star Trek stuff for real. Spooky indeed.