1. What does a Hadamard gate do to a qubit in the definite state 0?
2. An algorithm creates a superposition over all 2 to the 50 bit strings and measures immediately. What comes out?
3. Two routes reach the outcome 0110 with amplitudes 0.4 and minus 0.4. How often is 0110 measured?
4. Which sentence best describes the shape of every quantum algorithm?
5. Why are quantum gates required to be reversible? Select all that apply.
6. Why is decoherence so damaging to a quantum computation?
7. Two entangled qubits are separated. One party measures and gets 1. Why is this not faster than light communication?
8. What does Bell's theorem, together with the experiments confirming it, establish?
9. What is the computational role of entanglement?
10. A vendor claims their quantum computer will optimise delivery routes by considering all routes at once. What is the decisive question?