Author: Deepak Chauhan Program: Integrated MSc Physics, NIT Surat Project: QIntern'26 Proposal — Phase 2
This project implements a Variational Quantum Eigensolver (VQE) to estimate the ground state energy of the Quantum Harmonic Oscillator (QHO):
using IBM's qiskit-nature library, executed on AerSimulator.
| Tool | Version | Role |
|---|---|---|
| Qiskit | 2.4.1 | Core quantum SDK |
| qiskit-nature | 0.7.2 | Bosonic Hamiltonian construction |
| qiskit-aer | 0.15.0 | Cloud simulator backend |
| ipywidgets + Voilà | latest | Interactive visual dashboard |
| COBYLA (scipy) | latest | Classical optimizer |
| Method | E₀ (ℏω units) | Error |
|---|---|---|
| Exact (NumPy) | 0.50000000 | — |
| VQE (COBYLA) | 0.50000000 | < 10⁻⁸ |
VQE recovered the ground state energy to machine precision in ~23 optimizer iterations.
qi26_21_proposal/
├── QHO_Notebook.ipynb
├── requirements.txt
└── README.md