Chinese scientists use satellite to smash quantum entanglement distance record

Discussion in 'Science' started by scarlet witch, Jun 17, 2017.

  1. scarlet witch

    scarlet witch Well-Known Member Past Donor

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    This is an incredible achievement, the future for secure un-hackable communication, certainly I think right up there with the gravitational wave detection experiment last year

    In 2016 the Chinese launched the worlds first quantum satellite "Micius"

    http://www.abc.net.au/news/science/...-quantum-entanglement-distance-record/8620240
     
    Last edited: Jun 17, 2017
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  2. scarlet witch

    scarlet witch Well-Known Member Past Donor

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    I like this image of the satellite beaming the individual photons of a pair to Qinghai and Yunnan Provinces

    [​IMG]

    http://tech.firstpost.com/news-anal...t-quantum-communication-satellite-329744.html
     
  3. Thought Criminal

    Thought Criminal Well-Known Member Donor

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    That's weird. If they hadn't actually done it, I'd have said it's a bunch of hooey.

    It's a shame I won't study physics for six years so that I could understand it.
     
  4. scarlet witch

    scarlet witch Well-Known Member Past Donor

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    Here's an easy to understand vid for explaining Quantum Cryptography,

     
    Last edited: Jun 18, 2017
  5. Thought Criminal

    Thought Criminal Well-Known Member Donor

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    LOL. I sorta got it. Good video. It is pretty easy to follow except she runs through it pretty fast. She didn't say anything about the entangled pairs, though.

    I just now made time to watch that video. I'll have to go watch the one in your first post.
     
  6. scarlet witch

    scarlet witch Well-Known Member Past Donor

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    Yes watch the first one - about 1 min into the video he explains 50/50 result if measuring horizontal photon with a vertical filter... also how this changes the spin and that's how they'll know the message have been hacked.
     
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  7. Thought Criminal

    Thought Criminal Well-Known Member Donor

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    OK, the first video didn't show anything about instant communication. The guy said it couldn't happen. It was a good explanation of entangled pairs and why they are.
     
    Last edited: Jun 18, 2017
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  8. scarlet witch

    scarlet witch Well-Known Member Past Donor

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    The guy did say it can't be done but they've been doing this for a while now using optical fibre, there's too much interference for long distance and this is why they successfully used Satellite
     
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  9. VietVet

    VietVet Well-Known Member

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    I only regret it is the Chinese doing this.
    Not long ago, America led the world in nearly all areas of research, now we have the anti-science party in control. :cry:
     
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  10. Thought Criminal

    Thought Criminal Well-Known Member Donor

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    China is anti-science?
     
  11. tom444

    tom444 Well-Known Member

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    And boy is there a need for that.
     
    Last edited: Jun 18, 2017
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  12. Jimmy79

    Jimmy79 Banned

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    So you are saying this is only 6 months worth of work to figure this out?
     
  13. scarlet witch

    scarlet witch Well-Known Member Past Donor

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    Science mag made a really good video about this

     
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  14. Merwen

    Merwen Well-Known Member

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  15. HereWeGoAgain

    HereWeGoAgain Banned

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    Anyone who understands quantum mechanics hasn't studied it long enough - Richard P. Feynman

    Six years amounts to an introduction, in physics.
     
    Last edited: Jul 14, 2017
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  16. Merwen

    Merwen Well-Known Member

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    Apologies to Scarlet Witch--my post seems to have gotten "entangled" with yours.

    What I meant to say:

    I foresee active recruitment of mediums by the CIA coming up....
     
  17. The Rhetoric of Life

    The Rhetoric of Life Banned

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