There's No Cloning In Quantum Mechanics, So The Star Trek Transporter Really Is A Suicide Box

There's No Cloning in Quantum Mechanics, So the Star Trek Transporter Really Is a Suicide Box

Remember last week's video about the trouble with Star Trek's transporter (AKA a "suicide box") by CGP Grey, delving into whether the teleported version of yourself would really be, well, you? Henry Reich of Minute Physics has posted a video response with his own resolution to the logical paradox. You know what that means.... NERD FIGHT!

OK, not really. They agree on many of the particulars. But the original video didn't cover one important element to the problem of teleportation: the no-cloning theorem of quantum mechanics. As Reich explains:

[I]t is impossible to create an identical copy of a quantum state without destroying the original -- in 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 the "no cloning" theorem. 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 "you" to the new location, and whatever was left behind would definitively *not* be you.

Yep. The transporter is pretty much a suicide box (in the sense that the original "you" is completely destroyed). It's not the original Star Trek writers' fault, though: as Reich points out, those buzzkill physicists didn't work out that whole quantum cloning ban until the 1990s.

[Laughing Squid]

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    There's a great webcomic called Existential Comics, and the very first comic deals with the teleportation issue:

      If you don't feel it and come out the other side with your personality and memories, who cares!

        That's the thing though. You don't come out the other side. You experience everything up until you're ripped apart atom by atom, and then you're dead. They build a new you on the other end, totally separate to what you were, you're gone. It's a clone of you, with all your memories and personality, but it's not you.

    The distance between two points is change in possibility via superposition. So...think again.

    Will teleportation reconstruction restart your DNA so the reconstructed person has new DNA which will last about 80 years or so?
    Alternatively will the often teleported person be a copy of a copy and will age quicker like a photocopy of a photocopied document after about 5 copies?

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