This project aims to help IBM, Microsoft and Google to achieve quantum supremacy- to build a computer based on quantum physics that outperforms all known types of computers. There is currently a race to do so because quantum computers promise to have a huge technological, scientific and economical impact. But currently the error rate of the computers built by the companies is too high to be useful. A key reason for this that the devices are already very complex, but the error models used by the companies are too simplistic. This project will provide more accurate and innovative error models, hence better controls, which will be tested on cloud-based quantum computers. Expected outcomes are more robust quantum computers and quantum supremacy.