Quantum teleportation is even weirder than you think

Discussion in 'Critical Discussions Among Proponents and Skeptics' started by Sciborg_S_Patel, Jul 20, 2017.

  1. Quantum teleportation is even weirder than you think

     
  2. Baccarat

    Baccarat New

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    Further down the rabbit hole we go
     
  3. beyondmortality

    beyondmortality Member

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    i find it fascinating that everything has to have a twin, then only one twin gets transported. This could really make a great sci-fi movie.
     
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  4. Brian_the_bard

    Brian_the_bard Lost Pilgrim Member

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    Is it possible to untangle particles by, for example, having one observer affect the spin of one while another observer affects the spin of the other a different way?
     
  5. E.Flowers

    E.Flowers New

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    Technically, you "untangle" the particles when you measure the properties of one of them, entanglement itself being a state of uncertainty. Of course this is not as straightforward as it seems, and the fact that entanglement can do odd things like reaching into the past, adds another layer to the whole "observer problem".
     
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  6. beyondmortality

    beyondmortality Member

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    My understanding is once the measurement is made on one, it forces the other one into the opposite spin. The act of measuring destroys the entanglement. E. Flowers reference to reaching into the past I think refers to Seth Llyod's work in quantum illumination. Lloyd found entanglements which are completely destroyed in fact leave a trace that can be both detected and recorded.

    Untangling pairs is in fact too easy. Keeping the pairs entangled is very difficult. In order to make quantum computing a reality they need to figure out how to stabilize the pairs. So Lloyds work is an important step in that direction. The Russians a few years ago said they had actually restored untangled pairs. Now with the Chinese sending entangled pairs through space, science is making incredible strides in moving quantum computation beyond theory into actual systems.
     
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