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  • My good friend CGP Grey has made a great video about the practical and philosophical concerns

  • with teleportation, in particular the concern that when a transporter dismantles the atoms

  • in your body and reassembles an identical arrangement of atoms somewhere else, perhaps

  • the disassembled you actually dies and the reassembled you is actually a new being that

  • just thinks it's you.

  • And if they simply hadn't dismantled the original you, then there'd now be twoyou's”

  • in the universe, and which is really you?

  • You, or the teleported you?

  • Grey's video covers these questions really well so if you want more background you should

  • go watch that, but I do have one additional piece of information I'd like to point out,

  • something the original creators of Star Trek were definitely unaware of because it was

  • discovered in the 90s.

  • And that, is quantum teleportation.

  • Quantum teleportation is the only kind of real teleportation technology we currently

  • have access to, and while I won't go into the details here the point is you can take

  • some particles in a particular arrangement, and transfer their exact quantum condition

  • onto other particles arbitrarily far away.

  • You might think of it assad teleportationbecause the particles don't move, just their

  • statebut isn't that essentially what a Star-Trek teleporter does, albeit on a larger

  • scale?

  • Sending enough information and energy over to the new location to create the exact arrangement,

  • or state, of particles that corresponds toyou”?

  • And quantum teleportation has one pivotal property: it is impossible to create an identical

  • copy of a quantum state without destroying the originalin fact, you HAVE to destroy

  • the original arrangement in order to extract all the necessary information from it to construct

  • the new, teleported, state.

  • In fact, the relevant theorem in quantum mechanics is called theno cloningtheorem.

  • Now, we don't yet know exactly how brains work to create consciousness, but if the quantum

  • states of some electrons somewhere in the brain are critical to perfectly determining

  • (and thus copying) “you”, then a teleporter would necessarily have to obey the rules of

  • quantum teleportation when sending the information about the arrangement of particles that are

  • youto the new location, and whatever was left behind would definitively *not* be

  • you.

My good friend CGP Grey has made a great video about the practical and philosophical concerns

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Transporters and Quantum Teleportation

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    Summer posted on 2020/11/03
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