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Quantum computing has emerged as a promising technology for solving problemsthat are intractable for classical computers. In this study, we introducequantum computing and implement the Variational Quantum Eigensolver (VQE)algorithm using Qiskit on the IBM Quantum platform to calculate the groundstate energy of a hydrogen molecule. We provide a theoretical framework ofquantum mechanics, qubits, quantum gates, and the VQE algorithm. Ourimplementation process is described, and we simulate the results. Additionally,experiments are conducted on the IBM Quantum platform, and the results areanalyzed. Our fi ndings demonstrate that VQE can effi ciently calculatemolecular properties with high accuracy. However, limitations and challenges inscaling the algorithm for larger molecules are also identifi ed. This workcontributes to the growing body of research on quantum computing and highlightsthe potential applications of VQE for real-world problem-solving.

Use VQE to calculate the ground energy of hydrogen molecules on IBM Quantum