Large-scale quantum structures are necessary for the implementation of quantum technology, yet their complexity exceeds the computational limits of classical simulations. This PhD project will focus on advancing a qualitative theory for these large quantum systems, aiming to establish essential Figures of Merit (FoM), universal dimensionless parameters, which control transitions between qualitatively different regimes of operations of these structures. Such criteria will provide a framework for characterising, optimising, and ensuring the reliable operation of large quantum structures, opening pathways to new levels of quantum capability. Ideal Candidate: Strong background in theoretical and/or computational quantum physics, quantum statistical physics, mathematical physics Interest in alternative quantum computing methodologies Interest in close collaboration with experimentalists and engineers Enthusiasm for collaborative, international research Good communication skills Primary supervisor: Alexandre Zagoskin Secondary supervisor: Sergey Saveliev Entry requirements: BSc or master's Physics or Mathematics 2:1 or equivalent. English language requirements: Applicants must meet the minimum English language requirements. Further details are available on the International website. Funding information: The studentship is for 3 years full-time equivalent and provides a tax-free stipend of £19,237 per annum for the duration of the studentship plus university tuition fees. Please note that studentships will be awarded on a competitive basis to applicants who have applied to this project and other advertised projects starting with advert reference ‘SCI25-’ in the School of Science. Successful candidates will be informed during April 2025. How to Apply: All applications should be made online via the above ‘Apply’ button. Under programme name, select ‘Physics’ Please quote the advertised reference number: SCI25-AZ in your application. To avoid delays in processing your application, please ensure that you submit a CV and the minimum supporting documents. The following selection criteria will be used by academic schools to help them make a decision on your application. £19,237 per annum