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(MIT Technology Review)   Physicists have teleported quantum information from one ensemble of atoms to another 150 metres away, a demonstration that paves the way towards quantum routers and a quantum Internet   (technologyreview.com) divider line 64
    More: Spiffy, quantum, quantum information, physicists, musical ensemble, fiber-optics, teleportation, quantum teleportations, University of Science  
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2749 clicks; posted to Geek » on 30 Nov 2012 at 8:09 PM (2 years ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2012-12-01 11:32:08 AM  

Leishu: INeedAName: It doesn't matter. I'll still be just as pissed off when it stops working for no apparent raisin.

I know, right? You'd think they'd prune those issues out in testing, assembly, and inspection, right?


content9.flixster.com
 
vpb [TotalFark]
2012-12-01 11:49:50 AM  
So when do we get quantum pr0n?
 
2012-12-01 12:03:15 PM  
But, quantum entanglement cannot be used to teleport information. That is the law.
 
2012-12-01 12:24:50 PM  

ZoeNekros: What nonsense. There will never be quantum routers. Measurement will break the quantum entanglement, so the best case scenario is one-time-use single-bit transmission per entanglement previously created... and even then, you'd have to transmit information the old fashioned way to even interpret what was measured.

/not a scientist, but knows way more than science-journalists... sadly.


What if you filled a router with a bazillion kajillion entagled pairs, and they return the router when it's consumed?
 
2012-12-01 12:27:36 PM  

starsrift: Great, quantum internet.

Now I can be both teabagged by a 14 year old and not teabagged at the same time.


Why don't you have a seat over there, Congressman . . .
 
2012-12-01 01:29:52 PM  

murray208: 1. Put snakes on plane: These articles are becoming a dime a dozen, and have less verifiable facts than the jokers applying for the JREF challenge.

Yeah, the MIT Technology review sounds like a pretty disreputable source. The preprint is linked so you can verify whatever fact you want.


You going to pony up the cash for me to read it? Otherwise it's just the same "Uh, we totally transferred data, but not like all those other people who made the same claims before. This is totally legit, bro" article as all the rest over the years.

I do love how the abstract contains this gem: "Combining these two capabilities, here we realize quantum teleportation between two remote atomic-ensemble quantum memory nodes, each composed of ∼108 rubidium atoms and connected by a 150-m optical fiber." It could make sense in some context, but it's pretty funny they'd include that if it didn't facilitate this "teleportation" at all.
 
2012-12-01 07:25:51 PM  

You going to pony up the cash for me to read it? Otherwise it's just the same "Uh, we totally transferred data, but not like all those other people who made the same claims before. This is totally legit, bro" article as all the rest over the years.

I do love how the abstract contains this gem: "Combining these two capabilities, here we realize quantum teleportation between two remote atomic-ensemble quantum memory nodes, each composed of ∼108 rubidium atoms and connected by a 150-m optical fiber." It could make sense in some context, but it's pretty funny they'd include that if it didn't facilitate this "teleportation" at all.


That's part of the setup, you have to share entaglement before the teleportation takes place. So basically you don't know the first thing about what is going on. Which is fine, the authors will get along fine without your approval.
 
2012-12-01 10:07:25 PM  
www.bargainbinreview.com

Ziggy predicted an 87% chance this article would be green lit. Which may or may not be true.
 
2012-12-01 11:20:15 PM  

murray208: That's part of the setup, you have to share entaglement before the teleportation takes place. So basically you don't know the first thing about what is going on. Which is fine, the authors will get along fine without your approval.


So in other words, much ado about nothing.

Take two boxes in different locations with no common medium and transfer data between them. Then you can start talking about "teleportation" and a quantum network.
 
2012-12-02 01:10:54 AM  
If it has been proven that meaningful information can be transmitted without wires or any other ordinary medium and essentially violating the speed of light, we'll eventually find a way to make it work on a larger scale.

Imagine a quantum communication device on a completely automated starship. We'd never have to man the thing, everything is either automated or operated by a human on Earth in real-time (give or take for time-dilation effects). And we could accelerate it much faster than a manned ship, no squishy humans to make accommodations for. We could explore another starsystem remotely. If we found a habitable planet, we could build entire cities for them before settlers finally arrive. A human empire could remain in constant contact, no matter the distance.

/why yes, I do read a lot more sci-fi than I do physics textbooks. Don't judge me for hoping we get off this rock eventually.... and start screwing up whole other planets too.
 
2012-12-02 02:49:05 AM  
The government will know all of and none of your whereabouts at the same time.
 
2012-12-02 08:37:01 AM  

1. Put snakes on plane: murray208: That's part of the setup, you have to share entaglement before the teleportation takes place. So basically you don't know the first thing about what is going on. Which is fine, the authors will get along fine without your approval.

So in other words, much ado about nothing.

Take two boxes in different locations with no common medium and transfer data between them. Then you can start talking about "teleportation" and a quantum network.


It's not data, it's quantum information. Nobody said they were teleporting data, you would be dumb to expect it.

The only shared quantum information is the pair, which is done before the experiment. Now I suppose you could call the entangled pair a 'channel' if you wanted, but that runs counter to what people understood an entangled pair to be for 50-60 years.
 
2012-12-02 08:37:50 PM  
Four packets of peanuts, please.
 
2012-12-02 10:56:40 PM  

Zul the Magnificent: Four packets of peanuts, please.


I teleported home one night with Ron and Sid and Meg... Ron stole Meggie's heart away, and I got Sidney's leg.
 
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