I think (I don't think, I'm just back from a festival) that this is related to the stuff the Austrian group were doing on quantum crypotography in 2004. I heard the Prof (Anton something?) speak about it twice in as many weeks, at HP Labs and at BRLSI. After repetition, it just about started to sink in!
The most readable explanation is in Charlie Stross' s-f writings (he's good anyway). Yes, you do get supraluminal comms (i.e. real passage of information, not just slapstick with phase and group velocities). HOWEVER you can only do this with pre-prepared kit, a box of quantum stuff that was produced together at some point, then separated by physical transport. So although you're supraluminal over the short range (which could still be huge) your overall system can never exceed its own physical light cone (you have to ship both boxes from a starting point). As a result, you're not breaking the really big constraints.
no subject
The most readable explanation is in Charlie Stross' s-f writings (he's good anyway). Yes, you do get supraluminal comms (i.e. real passage of information, not just slapstick with phase and group velocities). HOWEVER you can only do this with pre-prepared kit, a box of quantum stuff that was produced together at some point, then separated by physical transport. So although you're supraluminal over the short range (which could still be huge) your overall system can never exceed its own physical light cone (you have to ship both boxes from a starting point). As a result, you're not breaking the really big constraints.