What is Quantum Amplitude Estimation used for?

Question: What is the goal of Quantum Amplitude Estimation? A) To measure the physical temperature of a quantum chip B) To compile a circuit into native gates only C) To create entanglement between all qubits D) To estimate the amplitude or probability of a marked outcome Correct: D Explanation: Quantum Amplitude Estimation estimates the probability amplitude associated with a desired outcome. It generalizes ideas from amplitude amplification and can provide speedups for some estimation problems. Topic: quantum computing / amplitude estimation / algorithms