Qiskit当前版本导入错误求助：量子相位估计算法模块修正

针对你代码中不兼容的导入语句，以下是适配当前Qiskit版本的正确写法：

升级安装（确保依赖版本匹配） #

!pip install qiskit-aer qiskit qiskit-nature matplotlib --upgrade

修正后的导入代码 #

import numpy as np
import matplotlib.pyplot as plt
from qiskit_aer import Aer
from qiskit.circuit.library import QFT, EvolvedOperatorAnsatz
from qiskit_nature.second_q.drivers import PySCFDriver
from qiskit_nature.second_q.problems import ElectronicStructureProblem
from qiskit_nature.second_q.converters import QubitConverter
from qiskit_nature.second_q.mappers import ParityMapper
from qiskit_nature.second_q.algorithms.ground_state_solvers import GroundStateEigensolver
from qiskit_nature.second_q.algorithms import VQEUCCFactory
from qiskit.algorithms.time_evolvers.trotterization import PauliTrotterEvolution

关键变更说明 #

• EvolvedOperatorAnsatz：从qiskit.opflow迁移至qiskit.circuit.library，作为标准电路库组件维护；
• PauliTrotterEvolution：被重构到qiskit.algorithms.time_evolvers.trotterization模块，统一归为时间演化相关的Trotter化实现；
• VQEUCCFactory：新版Qiskit Nature调整了其导入路径，从ground_state_solvers子模块移至顶层algorithms模块。

内容的提问来源于stack exchange，提问作者Verity Greenald