[extropy-chat] Teleportation Question

scerir scerir at libero.it
Tue Oct 10 13:18:27 UTC 2006

According to prof. Zeilinger it should be possible,
but in the far future only, to teleport little molecules
and perhaps viruses, with a good enough fidelity (this
is an important factor!).

There is, of course, a big difference between
a quantum state of a photon (or of a particle, 
or of an ion-in-a-trap, or of an atom, or of a billion
of atoms acting all together with a single phase
as a single object) and a quantum state of a big 
molecule (where the sequences, the chirality, etc.,
are essential factors).

Interesting experiments by Polzik confirm it is 
possibility to realize an entanglement between
a sample of matter (a collective made of billions of 
atoms) and radiation (a laser propagating through that 
sample of matter). 

This kind of entanglement, between matter and
radiation, allows one to perform the so called
'Bell measurement' on the superposition between 
the radiation (coming from the sample of matter)
and the quantum state to be teleported back into 
the sample of matter.

(In a science fiction story the above sample of matter 
would be a sort of primordial soup and the quantum
state to be teleported would be the recipe to
trasform the soup into a living organism. But this
story has been written I suppose ...). 



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