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Past exam of the computer science course of the University of Oxford

2020

Quantum information

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$$
\boxed{|\psi\rangle=\frac{|\phi_0\rangle+|\phi_1\rangle}{\sqrt2}=\frac12|0\rangle+\frac1{\sqrt2}|1\rangle+\frac i2|2\rangle.}
$$
<Orthonormality> makes this a <unit vector>. Its <probability amplitudes> in the given measurement <basis> are $(1/\sqrt2,1/\sqrt2,0)$, so the required <probabilities> are $(1/2,1/2,0)$.

Solution

Past exam of the computer science course of the University of Oxford / 2020 / Quantum information / 1 / b / iii / Solution

Past exam of the computer science course of the University of Oxford / 2020 / Quantum information / 1 / b / iii / Solution

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Past exam of the computer science course of the University of Oxford / 2020 / Quantum information / 1 / b / iii / Solution

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