4 ms·

Sad.. Let's hope for breakthroughs on quantum entanglement research then

• maxthegeek1 9y ago
  That still won't give us faster than light speed communication.
  • bostonvaulter2 9y ago
    Yes it potentially would: https://en.wikipedia.org/wiki/Quantum_entanglement https://en.wikipedia.org/wiki/Quantum_entanglement
    • undersuit 9y ago
      How do you reconcile your claim of FTL transmission with this statement directly from your link: "It is not possible, however, to use this effect to transmit classical information at faster-than-light speeds"?
      • gknoy 9y ago
        The speed of transmission of Quantum entanglement would, I believe, be limited by the speed of light between the two points in space, without having to traverse a path that follows the curve of the surface of the earth. So, communicating from Australia to Norway would traverse the diameter of the earth, rather than half of the circumference (plus satellites of course)
        • placeybordeaux 9y ago
          I don't think that it can be used to transmit information at all, but rather to establish a shared state. The key is that you can't influence the state in a way that transmits information. It's like sharing the same random oracle, you could use it to encrypt stuff, but sharing the same random bits with another party doesn't actually let you send information
        • slinger 9y ago
          > I don't think that it can be used to transmit information at all What if the "no-cloning theorem"[0] wasn't actually right? That would enable doing a bunch of copies of the same particle state, making it possible to predict the probability distribution of each particle. That way it would be possible to send information doing measurements[1] rather than forcing a particle state. [0] https://en.wikipedia.org/wiki/No-cloning_theorem https://en.wikipedia.org/wiki/No-cloning_theorem [1] https://www.forbes.com/sites/chadorzel/2016/05/04/the-real-reasons-quantum-entanglement-doesnt-allow-faster-than-light-communication/2/ https://www.forbes.com/sites/chadorzel/2016/05/04/the-real-r...
          • kirrent 9y ago
            > What if the "no-cloning theorem"[0] wasn't actually right? So, quantum mechanics isn't linear in nature any more? And it gets to transmit information superluminally? It's probably more likely that we're all living in a simulation and the devs accept a pull request from us increasing the speed of light so we can play games better. The no-cloning theorem itself is actually pretty fundamental to quantum mechanics and it would be very unexpected if it was wrong.
    • teraflop 9y ago
      This page is more relevant: https://en.wikipedia.org/wiki/No-communication_theorem https://en.wikipedia.org/wiki/No-communication_theorem
    • deleted 9y ago
      [deleted]
• jdmichal 9y ago
  Quantum entanglement cannot be used for classical communications: https://news.ycombinator.com/item?id=12548175#12548733 https://news.ycombinator.com/item?id=12548175#12548733 "Basic principle is that while measurements between both sides will be correlated, it's not possible to tell how they are correlated until both sides compare measurements." https://physics.stackexchange.com/questions/203831/ftl-communication-with-quantum-entanglement/203893#203893 https://physics.stackexchange.com/questions/203831/ftl-commu...
  • alasdair_ 9y ago
    Let's hope for "dig a really big hole through the center of the earth" research then? :)
• kirrent 9y ago
  Only if you're looking to play the CHSH game with Bob.