University of Strathclyde website
Digital Collections - University of Strathclyde Library
Search Results Previous Searches E-Shelf
Login End Session
Search 'System Number= 000005449' in 'General Silo' Collection [ Sorted by: Name/Title ] Refine search
Table view Full view
Record 1 of 1 1
Add to E-Shelf
e-item icon
PDF of thesis T15038 PDF of thesis T15038 - (8 M)
Title Adiabatic processes, noise, and stochastic algorithms for quantum computing and quantum simulation / Guanglei Xu.
Name Xu, Guanglei. .
Abstract Rapid developments in experiments provide promising platforms for realising quantum computation and quantum simulation.This, in turn, opens new possibilities for developing useful quantum algorithms and explaining complex many-body physics. The advantages of quantum computation have been demonstrated in a small range of subjects, but the potential applications of quantum algorithms for solving complex classical problems are still under investigation. Deeper understanding of complex many-body systems can lead to realising quantum simulation to study systems which are inaccessible by other means.This thesis studies different topics of quantum computation and quantum simulation.The first one is improving a quantum algorithm in adiabatic quantum computing, which can be used to solve classical problems like combinatorial optimisation problems and simulated annealing. We are able to reach a new bound of time cost for the algorithm which has a potential to achieve a speed up over standard adiabatic quantum computing. The second topic is to understand the amplitude noise in optical lattices in the context of adiabatic state preparation and the thermalisation of the energy introduced to the system. We identify regimes where introducing certain type of noise in experiments would improve the final fidelity of adiabatic state preparation, and demonstrate the robustness of the state preparation to imperfect noise implementations. We also discuss the competition between heating and dephasing effects, the energy introduced by non-adiabaticity and heating, and the thermalisation of the system after an application of amplitude noise on the lattice. The third topic is to design quantum algorithms to solve classical problems of fluid dynamics. We develop a quantum algorithm based around phase estimation that can be tailored to specific fluid dynamics problems and demonstrate a quantum
Abstract speed up over classical Monte Carlo methods.
Abstract This generates new bridge between quantum physics and fluid dynamics engineering, can be used to estimate the potential impact of quantum computers and provides feedback on requirements for implementing quantum algorithms on quantum devices.
Publication date 2018.
Name Daley, Andrew, degree supervisor.
Name University of Strathclyde. Department of Physics.
Name Scottish Universities Physics Alliance.
Thesis note Thesis Ph. D. University of Strathclyde 2018 T15038

Powered by Digitool Contact us Electronic Library Services Library Home