The hamiltonian given in the challenge is close to an exact Hamiltonian of molecules which was converted into a qubit Hamiltonian using Jordan-Wigner transformation. The entire algorithm was run on qiskit 0.41 framework and a maximum number of 6 sites was calculated to estimate the ground state energy for the molecule using VQE. SU(2) was used as the base ansatz with COBYLA optimiser to get the minimum eigenvalue. Another way of orbital rotation method was tried out on the 1d FH model using Givens rotation gate which gave even better results for the ground state energy.
Team name:
Superposition Squad
Team members:
Harish Rajendran Digvijaysinh Ajarekar Eliezer Pala
Project Description:
The hamiltonian given in the challenge is close to an exact Hamiltonian of molecules which was converted into a qubit Hamiltonian using Jordan-Wigner transformation. The entire algorithm was run on qiskit 0.41 framework and a maximum number of 6 sites was calculated to estimate the ground state energy for the molecule using VQE. SU(2) was used as the base ansatz with COBYLA optimiser to get the minimum eigenvalue. Another way of orbital rotation method was tried out on the 1d FH model using Givens rotation gate which gave even better results for the ground state energy.
Presentation:
https://studthdegde-my.sharepoint.com/:p:/g/personal/eliezer_pala_stud_th-deg_de/EYOXOlBsEEFBrHHfwBPdigkBpnITBYIq8uYwAIiUVJIuew?e=9HdJAf
Source code:
https://mygit.th-deg.de/da02345/groundstateenergy.git