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Thread: Is classical non-locality possible?

  1. #1 Is classical non-locality possible? 
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    In this article authors theorize that classical (not quantum!) non-separable, non-local states are possible. Basically, a variety of classical (not quantum) entanglement:
    Classical analogy of quantum teleportation based on non-local classical correlation.
    Non-local classical optical correlation...Here we use the notation jh)i(jv)i) to express a classical state29,31. That is to say, if ^h polarization is measured in one beam, the information of ^v polarization can be ‘‘determined’’ in another beam due to the firstorder field correlation, and vice versa. This means that a classical correlation state has been constructed. Because the correlation between two beams is independent on the separation between them, such a correlation is non-local and can be regarded as a classical analogy of EPR entangled state in quantum mechanics. The problem is whether or not some unique phenomena such as quantum teleportation can be realized by applying such a classical EPR correlation state, which is similar to the case in quantum information process.
    Classical analogy of quantum teleportation based on non-local classical correlation.
    Non-local classical optical correlation and implementing analogy of quantum teleportation (readcube.com)

    Some articles claim that classical non-separability of the states could be achieved even in acoustic systems:
    Here, we experimentally demonstrate the preparation and tunability of acoustic nonseparable states, i.e. Bell states, supported by coupled elastic waveguides.
    The sound of Bell states | Communications Physics (nature.com)

    If all this is true, what applications may classical non-separable, non-local states have for wireless remote information or energy transfer between a sender and receiver? Is classical entanglement less fragile than a quantum one?


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  3. #2  
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    Quote Originally Posted by Stanley514 View Post
    In this article authors theorize that classical (not quantum!) non-separable, non-local states are possible. Basically, a variety of classical (not quantum) entanglement:
    Classical analogy of quantum teleportation based on non-local classical correlation.
    Non-local classical optical correlation...Here we use the notation jh)i(jv)i) to express a classical state29,31. That is to say, if ^h polarization is measured in one beam, the information of ^v polarization can be ‘‘determined’’ in another beam due to the firstorder field correlation, and vice versa. This means that a classical correlation state has been constructed. Because the correlation between two beams is independent on the separation between them, such a correlation is non-local and can be regarded as a classical analogy of EPR entangled state in quantum mechanics. The problem is whether or not some unique phenomena such as quantum teleportation can be realized by applying such a classical EPR correlation state, which is similar to the case in quantum information process.
    Classical analogy of quantum teleportation based on non-local classical correlation.
    Non-local classical optical correlation and implementing analogy of quantum teleportation (readcube.com)

    Some articles claim that classical non-separability of the states could be achieved even in acoustic systems:
    Here, we experimentally demonstrate the preparation and tunability of acoustic nonseparable states, i.e. Bell states, supported by coupled elastic waveguides.
    The sound of Bell states | Communications Physics (nature.com)

    If all this is true, what applications may classical non-separable, non-local states have for wireless remote information or energy transfer between a sender and receiver? Is classical entanglement less fragile than a quantum one?
    None whatsoever.


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  4. #3  
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    Quote Originally Posted by exchemist View Post
    None whatsoever.
    So, are these researchers completely wrong or what did you mean?
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  5. #4  
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    Quote Originally Posted by Stanley514 View Post
    Quote Originally Posted by exchemist View Post
    None whatsoever.
    So, are these researchers completely wrong or what did you mean?
    The researchers are not trying to transmit energy, since that would be futile. (This has been discussed - and dismissed - before on this site, I think.) And as I read it, they are not trying to transmit information either. They seem to be concerned with a classical analogy to illustrate the meaning of quantum teleportation (whatever they mean by that - it is not clear to me).
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  6. #5  
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    Quote Originally Posted by exchemist View Post
    The researchers are not trying to transmit energy, since that would be futile.
    Some of them do:
    In contrast to this traditional viewpoint, recent advances in structured light and topological optics have highlighted the nontrivial wave-matter interactions of pulses with complex space-time nonseparable structure, as well as their potential for energy and information transfer.
    Measures of space-time nonseparability of electromagnetic pulses (aps.org)
    Last edited by Stanley514; September 6th, 2021 at 01:47 PM.
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  7. #6  
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    Quote Originally Posted by Stanley514 View Post
    Quote Originally Posted by exchemist View Post
    The researchers are not trying to transmit energy, since that would be futile.
    Some of them do:
    In contrast tothis traditional viewpoint, recent advances in structured light and topological optics have highlighted the nontrivial wave-matter interactions of pulses with complex space-time nonseparable structure, as well as their potentialfor energy and information transfer.
    Measures of space-time nonseparability of electromagnetic pulses (aps.org)
    That has nothing to do with non-locality, though.
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  8. #7  
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    Quote Originally Posted by exchemist View Post
    Quote Originally Posted by Stanley514 View Post
    Quote Originally Posted by exchemist View Post
    The researchers are not trying to transmit energy, since that would be futile.
    Some of them do:
    In contrast tothis traditional viewpoint, recent advances in structured light and topological optics have highlighted the nontrivial wave-matter interactions of pulses with complex space-time nonseparable structure, as well as their potentialfor energy and information transfer.
    Measures of space-time nonseparability of electromagnetic pulses (aps.org)
    That has nothing to do with non-locality, though.
    I've combined the ideas from different articles. In other article they theorize that classical states could be non-local, in principle.
    Last edited by Stanley514; June 22nd, 2021 at 02:19 AM.
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  9. #8  
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    Quote Originally Posted by Stanley514 View Post
    Quote Originally Posted by exchemist View Post

    That has nothing to do with non-locality, though.
    I've combined the ideas from different articles. In other article they theorize that classical states could be non-local, in principle.
    This is getting silly. You are mix-and-matching highly technical papers that you clearly don't understand, and deriving unjustified conclusions from them.
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  10. #9  
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    That's what he always does... I don't bother reading anything he posts...
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  11. #10  
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    Anyone remember the mix and match (sweets) counter in Woolies?
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  12. #11  
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    Quote Originally Posted by geordief View Post
    Anyone remember the mix and match (sweets) counter in Woolies?
    Yes indeed.

    Woolworth's in Cornmarket in Oxford also had a good bakery (Cadena bakery) where I used to buy delicious crusty bloomers. I virtually lived on them as a student.
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  13. #12  
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    Quote Originally Posted by exchemist View Post
    Quote Originally Posted by geordief View Post
    Anyone remember the mix and match (sweets) counter in Woolies?
    Yes indeed.

    Woolworth's in Cornmarket in Oxford also had a good bakery (Cadena bakery) where I used to buy delicious crusty bloomers. I virtually lived on them as a student.
    Yes,I remember you telling us about that bread some years ago.I hardly remember that branch.I was thinking of one in Colchester.I think they also sold records or cassettes.

    So long ago now....
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  14. #13  
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    [QUOTE=exchemist;632684]
    Quote Originally Posted by Stanley514 View Post
    deriving unjustified conclusions from them.
    For now not too much. Just asking and clarifying.
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  15. #14  
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    Quote Originally Posted by Stanley514 View Post
    Quote Originally Posted by exchemist View Post
    deriving unjustified conclusions from them.
    For now not too much. Just asking and clarifying.
    No, you are asking for clarification on something YOU personally made up, per your own admission.
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