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  • ReanuKeeves@lemm.ee
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    21 hours ago

    Can someone explain how using lasers to transmit an image means it was “teleported”?

    • Ace@feddit.uk
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      21 hours ago

      bc if they said data was transferred by lasers then people wouldn’t click the article and load their ads

    • knightly the Sneptaur@pawb.social
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      16 hours ago

      Think of it like an identical pair of Shrodinger’s Cats. You can’t know if the cat is alive or dead 'til you open the box, but because they’re identical you know that the other box will show the same result as your own.

      The lasers don’t transmit information, they transmit a quantum superposition. The act of measuring this quantum state creates information, and because the photons are entangled, this information includes what was received at both ends.

      So the photons that carry the information aren’t teleported, but the information itself is because it doesn’t exist until it is observed.

      • ReanuKeeves@lemm.ee
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        16 hours ago

        That sounds like complete garbage though, if those qubits are still in superposition then it hasn’t changed from being both 1 and 0. All that means is that nothing has really between the two points and the teleportation is theoretical.

        • knightly the Sneptaur@pawb.social
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          13 hours ago

          It might be counterintuitive, but that’s genuinely how quantum systems work.

          The entangled photons are in a state of quantum superposition until they are measured, and that measurement creates information about the state of both photons.

          It’s not a process that can be used to transmit classical information, it’s a process that transmits identical quantum random numbers to two places at once that can’t be intercepted without breaking their identicalness.

          • ReanuKeeves@lemm.ee
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            15 hours ago

            I understand quantum entanglement is a real thing but in this article, you click on where it says quantum teleportation and it tells you what they do is use laser patterns and no mention of quantum entanglement, it just sounds like fiber optics minus the fibers.

            • knightly the Sneptaur@pawb.social
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              14 hours ago

              “Previous demonstrations of quantum teleportation have focused on transferring quantum states between physically separated systems,” said Dougal Main, from the Department of Physics at the University of Oxford, who led the study.

              "In our study, we use quantum teleportation to create interactions between these distant systems. By carefully tailoring these interactions, we can perform logical quantum gates – the fundamental operations of quantum computing – between qubits housed in separate quantum computers.

              “This breakthrough enables us to effectively ‘wire together’ distinct quantum processors into a single, fully-connected quantum computer.”

              To simplify, they’re not just entangling pairs of photons and sending them out to two systems, but entangling entire qubits that exist on separate systems. This allows the qubits on separate systems to interact with each other without collapsing their superposition, enabling the quantum equivalent of parallel processing.

              Rather than two identical Shrodinger’s Cats as in entangled photons, the entangled qubits act as one Shrodinger’s Cat that’s in two places simultaneously.

    • Bronzebeard@lemm.ee
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      20 hours ago

      Where’s it say they used a laser to transfer the information? This sounded like quantum entanglement was being demonstrated here

              • ReanuKeeves@lemm.ee
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                10 hours ago

                A completely different linked article? It was literally a hyperlink within it. I ain’t gonna argue with you over something so dumb just because you couldn’t be arsed to understand what you were reading.

                • Bronzebeard@lemm.ee
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                  10 hours ago

                  Hyperlink which went to a different article. Do you not understand how the Internet works? Don’t act like you weren’t wrong when you failed to clarify properly. That’s not on me