Comments on: Cracking the quantum safe

By: Graham Rounce

Graham Rounce — Sat, 20 Oct 2012 09:11:34 +0000

“may soon answer questions even more fundamental — and upsetting” – What’s this supposed to mean?

By: Amit

Amit — Thu, 18 Oct 2012 06:49:04 +0000

Is correct. Quantum encryption is, as of now, considered useful in next-generation encryption, when the internet would have migrated to a quantum network. Current encryption technology would be obsolete, as it would require no time to crack that encryption with ultra-fast quantum processing.

By: JFH

JFH — Mon, 15 Oct 2012 18:50:44 +0000

I took another look and it appears you are correct. Spooky action (aka quantum teleportation) is not being used to transfer data but to ENCRYPT the data – a quantum key of sorts. This article goes on to say that this technology would be indispensable for creating a quantum computing network.
http://www.wired.com/wiredscience/2012/10/quantum-satellite-teleportation/

By: Frank

Frank — Mon, 15 Oct 2012 16:39:36 +0000

It’s all good… In a holographic universe!

http://rense.com/general69/holoff.htm

By: Eric

Eric — Mon, 15 Oct 2012 15:50:39 +0000

Actually, Quantum communication is theoretically NOT possible. Even though you can change the spin of a particle(by measuring it, and causing the twin to also assume a specific state) there is no means of communicating what exactly it is your doing to the distant location.
So, in other words, a bunch of particles will take on random spins which correlate to spins of their distant partner, but there will be no discernable information transfer.
Look into it.

By: JFH

JFH — Mon, 15 Oct 2012 15:19:02 +0000

I believe they are already gearing up to test quantum communication using satellite to earth (and vice versa) transmissions. If that is successful that would be a a monumental first step although I share the skepticism of spooky action at interplanetary, and interstellar distances. If it holds up, that would have mind-blowing implications.

By: David Thornton

David Thornton — Mon, 15 Oct 2012 15:16:14 +0000

Unfortunately, one cannot use entanglement to transmit information without sending supplementary information at or below the speed of light…….

By: Gerry

Gerry — Mon, 15 Oct 2012 14:58:20 +0000

Don’t forget that entanglement cannot be used for the instantaneous transfer of information, since the process requires a conventional signal be exchanged between the two observers.

The usefulness of entanglement in communications comes from the prospect of extremely powerful encryption.

By: Xuuths

Xuuths — Mon, 15 Oct 2012 14:37:40 +0000

You forgot to include the very important words “in theory.” There have been no actual experiments “as far away as the moons of Jupiter or Saturn” and so we cannot be sure they will have the same results. I have a healthy skepticism about the distance entangled particles will exhibit this behavior, and welcome additional experiments. (It would be great for it to be upheld at such distances!)

By: David

David — Mon, 15 Oct 2012 13:57:20 +0000

Can “spooky action” occur faster than the seed of light?

By: Gorden Russell

Gorden Russell — Mon, 15 Oct 2012 13:20:30 +0000

This research will lead to the quantum entanglement communicator that will be used in the future of space exploration. Remember that when you change the spin of one of a pair of entangled particles, the other particle of that pair changes its spin too, at the same time, even though it may be as far away as the moons of Jupiter or Saturn. This is the spooky action at a distance that Einstein wrote about.