NRC and l’Université de Montréal | Improved energy estimation with Green’s function

A key application of quantum computing is to prepare and measure the ground state of various materials and molecules. However, the ground state alone is often insufficient to predict the interesting properties of materials. Furthermore, quantum algorithms often lead to an imperfect estimation of the ground state energy.

In this project, we are developing an algorithm to calculate Green's function, which allows us to predict more properties than the ground state alone. In addition, this algorithm improves the estimation of the energy of an imperfect ground state, thereby improving existing results.