Anyone know how well neutrino would function as a quantum wire (i.e., store of quantum information)?
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Do you want to encode across mass states? It’s probably hard to talk about decoherence time since there are presumably pretty enormous relativistic effects, but from neutrino oscillations it would seem that they stay more or less coherent when passing through the planet.
Neutrino has spin 1/2, so let's say a qubit in that degree of freedom.
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Is there reliable data for observations of the spin degree of freedom? I have no idea how easy or hard it is to find a polarised source, without which it is probably hard to say much.
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No idea, TBH!
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