I grew a bit weary of speculating. So for those who are still =
interested in this issue of QM teleportation and possible applications =
for communication, I have corresponded with one of the QM teleportation =
researchers and he was very kind to answer a few of my 'silly' layman's =
I hope this helps answer a few of your questions too.
I asked the following questions to Dr. Hideo Mabuchi, Professor of =
Physics, at the California Institute of Technology and a member of the =
Quantum Optics Group that performed the successful QM teleportation.
Q: Would it possible to use Quantum Teleportation to convey information =
across large distances in place of traditional communication techniques?
A: In the way that it is currently understood, Quantum Teleportation =
could not really be used as a direct substitute for traditional =
communication techniques. In fact, the use of a traditional =
communication channel is required as an essential part of the =
teleportation protocol! [snip...] I should also point out that any =
technological application of these "quantum ideas" lies fairly far in =
the future (at least 10 years hence, in my opinion), due to the extreme =
difficulty of implementing these ideas in the lab.
Q: Can other particles besides photons be teleported?
A: It's important to note that the actual, "physical" particles are not =
themselves teleported -- rather, the quantum state of a particle located =
in one place gets transferred to another particle located somewhere =
else. But given that caveat, there's no reason why the states of =
arbitrary particles (besides photons) can't be transmitted via the =
quantum teleportation protocol.
Q: Are there theoretical distance limitations for teleportation?
A: As far as we know, there are no fundamental distance limitations... =
but the technological difficulty of trying to implement the protocol =
might become prohibitive at some distance scale.
Thank you Dr. Mabuchi!
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