Earlier quoted context omitted.
I never said that QT is a really available commercial technology. Look I wrote: >> … firstly because "Quantum Teleportation (QT)" is available soon enough for a broader audience than just Physicists … Look up: doi:10.1038/492022a if you don't believe in QT. Then I'm glad to see your arguments on that. >> I would like a cite for your bandwidth claim Here you go 10-Gbit/s vs 1-Tbit/s → doi:10.1038/nphoton.2012.138 if y…
"I would like" was me asking politely. My arguments are mostly about the difference between "QT can be done in the lab" versus "QT can be done outside of the lab with commercially available equipment", and also "can QT transmit information faster than c?". The answer to the latter appears to be no: http://physics.stackexchange.com/questions/34653/is-it-possi... http://www.nature.com/news/data-teleportation-the-quantu…
StackOverflow is not a good source, especially that thread, it is full of bad answers. I've read all of them. The first poster said: "Those quantum states may encode classical information." The poster of the question has obviously no clue about physics and nobody in there mentioned teleportation of quantum entangled states, which you should know, is instant.
Here's a more detailed explanation, if you prefer that:
If you have a particle (such as a photons, electrons, or molecule) and have it physically interact with another particle, and then separate them, the result is that they can then both be described as being in the same quantum mechanical state. Basically, they are now the same, in factors such as position, momentum, spin, polarization, etc.
However, because we are dealing with quantum mechanics, the state of those particles remains undefined until measured (because it would then be forced to assume a specific state).
Now, how does this relate to instant data teleportation, you say? That’s the interesting part. You see, quantum entanglement is a form of quantum superposition (which I talked about in the aforementioned post about some quantum mechanics). This means that each particle that you have can be in any state. (Remember: observing a particle will force it to become a specific state). However, when you observe one of the particles, it will become a certain state, while the other particle becomes the opposite state. The change is completely instantaneous, and the particles can be anywhere — you could have your second particle on the other side of the planet and it would assume an equal and opposite state of it’s entangled counterpart. Instant data transfer.
Say you had a binary bit you wanted to transfer. First, you must entangle the bits. Then, put one of them on the other side of the globe. Observe one of them, forcing it to assume a certain state, and the other will instantly change. Like magic. Source: [1]
Ask me about latency here… However, you drifted the discussion to QT. My initial post was originally trying to say that data can be transfered wirelessly faster than with a cable, or at least as fast. Latency cannot in such a system cannot be generalized, because it is dependant on the technology in the receiving side. If the receiving side uses optical fiber, you would need an architecture as described in [2].
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[1] http://programmingantics.wordpress.com/2012/08/15/quantum-en...
[2] http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5...