New method of quantum entanglement increases the information that can be carried
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Re: New method of quantum entanglement increases the information that can be carried
#2[deleted]
Re: New method of quantum entanglement increases the information that can be carried
#3I wonder how long before we see major internet nodes connected via quantum entanglement.
Re: New method of quantum entanglement increases the information that can be carried
#4I wonder how long before we see major internet nodes connected via quantum entanglement.
Entanglement can't be used for communication. https://en.wikipedia.org/wiki/No-communication_theorem
Re: New method of quantum entanglement increases the information that can be carried
#5>Quantum entanglement could allow users to send data through a network and know immediately whether that data had made it to its destination without being intercepted or altered. With hyperentanglement, users could send much denser packets of information using the same networks.
As I understood the description, they're not claiming that the process of entanglement encodes the information being transmitted, but rather that more information-carrying dimensions can now be entangled, so now those extra dimensions can also enjoy the proposed security benefits. For a system relying on those features, the throughput is effectively increased because more channels are eligible.
Re: New method of quantum entanglement increases the information that can be carried
#6I wonder how long before we see major internet nodes connected via quantum entanglement.
Entanglement can't be used for communication. https://en.wikipedia.org/wiki/No-communication_theorem
But it can be used for security: http://www.nature.com/news/2008/080827/full/news.2008.1067.h...
Re: New method of quantum entanglement increases the information that can be carried
#7I wonder how long before we see major internet nodes connected via quantum entanglement.
Entanglement can't be used for communication. https://en.wikipedia.org/wiki/No-communication_theorem
I was going to post that link. This is the standard theory, isn't it? Most physicists subscribe to this, regardless of their interpretation of quantum mechanics (Copenhagen, De Broglie–Bohm, and so on?)
Re: New method of quantum entanglement increases the information that can be carried
#8Earlier quoted context omitted.
Entanglement can't be used for communication. https://en.wikipedia.org/wiki/No-communication_theorem
But it can be used for security: http://www.nature.com/news/2008/080827/full/news.2008.1067.h...
Right. So connected the usual way, but using QM for security.
Re: New method of quantum entanglement increases the information that can be carried
#9I wonder how long before we see major internet nodes connected via quantum entanglement.
Entanglement can't be used for communication. https://en.wikipedia.org/wiki/No-communication_theorem
They already teleported information via similar means, so I would hope this doesn't mean FTL communication is impossible.
Re: New method of quantum entanglement increases the information that can be carried
#10Earlier quoted context omitted.
Entanglement can't be used for communication. https://en.wikipedia.org/wiki/No-communication_theorem
I was going to post that link. This is the standard theory, isn't it? Most physicists subscribe to this, regardless of their interpretation of quantum mechanics (Copenhagen, De Broglie–Bohm, and so on?)
Yes basically if you build say 2 entangled bytes you'll basically get random data out of them every time you measure / set their state you'll basically get random data.
The only way to make the data "make sense" is to share the measurements between both observers on a side channel.
But and that's the big but which i don't understand and couldn't get a decent explanation from anyone who i know has some / more understanding that i do in QPT.
Yes i understand if you got 2 observers Alice and Bob both of them with a pair of say you got a pair of 12 entangled quantum bytes.
Bob can't tell by random measurement if Alice has done something since the state of his 12 qbytes is "random", however if the interpreted say say's Hello World! or I Just Changed It why Bob can't superimpose additional information he has such as the knowledge of the English language to interpolate that Alice actually did something.
On top of that the no information theorem is also tied to the no-cloning theorem which conflicts with well with how some one would explain quantum teleportation.
The explanation I managed to find is that the no-cloning and no-teleportation theorems do not prevent quantum teleportation but rather classical one which means that you cannot encode a quantum state into a classical system and then clone/teleport that information into another quantum system, but you can do it from one quantum system to another which is where my brains starts to scream.
http://courses.cs.washington.edu/courses/cse599d/06wi/lectur...