However, it is possible to copy a quantum state if we are prepared to destroy the state of the original. For example, we could have an electron in an unknown spin-state |α〉 and a neutron, say, in another spin-state |γ〉. It is quite legitimate to exchange these, so that the neutron’s spin-state is now |α〉 and the electron’s is |γ〉. What we cannot do is duplicate |α〉, (unless we already know what |α〉 actually is)! (Cf. also Wootters and Zurek 1982.) Recall the ‘teleportation machine’ discussed in Chapter 1 (p. 35). This depended upon it being possible, in principle, to assemble a complete copy
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You can't copy quantum states without destroying the original so the idea of teleporting consciousness means your original body is destroyed; sorry bucko.
