 Solution

ID: past-exam-of-the-laser-science-and-quantum-information-processing-course-of-the-university-of-oxford/2021/3/b/iii/solution

A resonant Rabi pi pulse gives

δ = 0, τ = \frac{π}{V}, U (τ) = - i σ_{x} .

It swaps

∣0 ⟩

and

∣1 ⟩

with a common global phase, implementing the Pauli gate

X

, or NOT. Its Bloch sphere action is a half-turn about the

x

-axis.

 New to topics? Read the docs here!