microsoft/qdk
Publicmirrored from https://github.com/microsoft/qdkAvailable
katas/content/qubit/learn_single_qubit_state/Verification.qs
34lines · modecode
| 1 | namespace Kata.Verification { |
| 2 | open Microsoft.Quantum.Intrinsic; |
| 3 | open Microsoft.Quantum.Math; |
| 4 | |
| 5 | @EntryPoint() |
| 6 | operation CheckSolution() : Bool { |
| 7 | use q = Qubit(); |
| 8 | |
| 9 | // Prepare the state that will be passed to the solution. |
| 10 | let angle = 0.5; |
| 11 | Ry(angle, q); |
| 12 | |
| 13 | // Call the solution and get the answer. |
| 14 | let (a, b) = Kata.LearnSingleQubitState(q); |
| 15 | |
| 16 | // Calculate the expected values based on the rotation angle. |
| 17 | let (a_exp, b_exp) = (Cos(0.5 * angle), Sin(0.5 * angle)); |
| 18 | |
| 19 | Reset(q); |
| 20 | |
| 21 | let isCorrect = |
| 22 | (AbsD(a - a_exp) <= 0.001) and |
| 23 | (AbsD(b - b_exp) <= 0.001); |
| 24 | |
| 25 | // Output different feedback to the user depending on whether the exercise was correct. |
| 26 | if isCorrect { |
| 27 | Message("Correct!"); |
| 28 | } else { |
| 29 | Message("At least one of the amplitudes was too far from the expected value."); |
| 30 | } |
| 31 | |
| 32 | isCorrect |
| 33 | } |
| 34 | } |
| 35 | |