13.8: Representation of Qubits
- Page ID
- 52460
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The no-cloning theorem prepares us to expect changes in quantum logic with respect to its classical analog. To fully appreciate the differences, we have to work out a representation of the qubit that unlike the classical bit, allows us to picture superpositions. We will introduce two such representations, a pictorial one that represents the qubit bit as a point in the surface of a sphere, and an operational one that presents the qubit as a line in a circuit much like the logic circuits we explored in Chapter 1.