Physics Asked on November 28, 2021
Consider the following protocol:
Here comes the question: why this protocol DOES NOT violate the no-cloning theorem?
You could think that quantum teleportation violates the no-cloning theorem, but it is actually not the case.
Indeed, the original state $|psirangle$ has not been duplicated, since after the teleportation process only the target qubit is left in the state $|psirangle$, while the original qubit ends up in one of the computational basis state, namely $|0rangle$ or $|1rangle$, depending on the measurement result.
Answered by A. Bordg on November 28, 2021
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