Use VQE to calculate the ground energy of hydrogen molecules on IBM
  Quantum
Quantum computing has emerged as a promising technology for solving problems
that are intractable for classical computers. In this study, we introduce
quantum computing and implement the Variational Quantum Eigensolver (VQE)
algorithm using Qiskit on the IBM Quantum platform to calculate the ground
state energy of a hydrogen molecule. We provide a theoretical framework of
quantum mechanics, qubits, quantum gates, and the VQE algorithm. Our
implementation process is described, and we simulate the results. Additionally,
experiments are conducted on the IBM Quantum platform, and the results are
analyzed. Our fi ndings demonstrate that VQE can effi ciently calculate
molecular properties with high accuracy. However, limitations and challenges in
scaling the algorithm for larger molecules are also identifi ed. This work
contributes to the growing body of research on quantum computing and highlights
the potential applications of VQE for real-world problem-solving.
Maomin Qing Wei Xie