Quantum phase estimation can find the phase of an eigenvalue.
量子相位估计可以求出本征值对应的相位。
By applying quantum phase estimation to a controlled unitary, we can extract an energy-related phase in quantum simulation with high precision.
在量子模拟中,对受控幺正算符应用量子相位估计,我们可以高精度提取与能量相关的相位信息。