Re: Quantum entanglement as upload checksum?

From: scerir (scerir@libero.it)
Date: Wed Mar 05 2003 - 02:52:01 MST

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    Bret Kulakovich
    > I decided to try and find another use
    > of entanglement.

    Yes. Look at this.

    There are 2 sources emitting particles,
    (let us say photons) of the same wavelenght.
    If the particles reach an 'interferometer',
    one by one, we get an interference pattern
    (yes, even if there are 2 different sources,
    it is called H-BT effect).

    The interference is due to the uncertainty about
    wich of the 2 sources (s1, s2) emitted that particle
    which is going through the 'interferometer'. It is
    a variation of the usual 'which path' issue (double
    slit exp.).

                               d1

                                /
    s1 ----->------------------/bs d2
                              /|
                               |
                               |
                               |
                               | /
    s2 ----->------------------|/m
                               /

    s1, s2 = sources (independent)
    m = mirror
    bs = beam splitter
    d1, d2 = detectors

    Now if we introduce quantum objects
    (let us say 2-state systems, like atoms,
    or short molecules, or perhaps BECs)
    in each of the 2 paths, say O1 and O2,

                             d1

                                /
    s1 -----O1-----------------/bs d2
                              /|
                               |
                               |
                               |
                               | /
    s2 -----O2-----------------|/m
                               /

    we are able to *entangle* these quantum
    objects. Not always, of course. We must
    discard trivial events, like when particles
    (photons) are absorbed by quantum objects,
    and other 'special (technicalities here!)
    events.

    To entangle 2 'brains' (B1, B2) you could
    insert B1 and B2 (instead of O1, O2) but
    you first need to find 2 'quantum' brains,
    imo. Or 2 quantum sub-systems inside each
    brain. Then you could imagine something like ...
    cosmic rays ... entangling brains, or humans ...



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