My research focuses on the theory of open quantum systems: specifically, on the description of noise effects in regimes where the standard approximations of time-dependent perturbation theory do not apply. Currently I am working on the development of exact approaches, with emphasis on so-called `embedding methods’ that enable ways to treat the dynamics of non-Markovian systems in terms of larger Markovian processes. More recently, I have become interested in finding practical ways to characterise and predict the degree of non-Markovianity of quantum processes, as well as in the use of machine learning in analysing such problems.

The main applications of my work are to quantum optical and quantum many-body systems. Further applications may be found in quantum technologies, where noise and memory effects are thought to have a potential benefit for quantum information processing.

Email: gpleasance1@gmail.com

Google scholar: https://scholar.google.co.za/citations?user=DcaE0RwAAAAJ&hl=en

Orcid: https://orcid.org/0000-0001-7489-7410


PhD Physics, “Non-Markovian effects and decoherence processes in open quantum systems”, University of Sussex (UK).

MSci Theoretical Physics, University of Birmingham (UK).