Print Email Facebook Twitter Gate Set Tomography for Nitrogen-Vacancy Systems Title Gate Set Tomography for Nitrogen-Vacancy Systems Author Vos, David (TU Delft Electrical Engineering, Mathematics and Computer Science; TU Delft QID/Borregaard Group) Contributor Borregaard, J. (mentor) Zaidman, A.E. (graduation committee) Degree granting institution Delft University of Technology Programme Computer Science and Engineering Project CSE3000 Research Project Date 2022-06-27 Abstract Quantum computing is an emerging field with many promising future applications. These include, but are not limited to, quantum machine learning, quantum cryptography and quantum chemical engineering.Before these can be realised, obstacles, which arise due to scaling, need to be overcome.To accomplish this, quantum processors must be built with low noise and high target gate fidelity rates.By characterising quantum systems, possible sources of noise can be identified, and consequently, systems can be designed which effectively suppress noise.Gate Set Tomography (GST) is a protocol developed for the characterisation of quantum processors.In this research, we apply GST to nitrogen-vacancy (NV) centre systems.We also construct a widget meant to visualise GST results in an intuitive manner.Our research is based on twelve models, varying in the number of gates used, the initial state of the nitrogen nucleus, and whether an XY4 echo was applied after gates.We use simulated and experimental models, and analyse these using the error generator, diamond norm and Nσ metrics.We conclude that our simulated models capture sources of noise, as the proportion of stochastic errors shifts to Hamiltonian errors when we change our target model from the ideal model to the simulated ones.We also conclude that the XY4 echo significantly reduces non-Markovianity, which arises due to coupling.Furthermore, evidence which points to calibration faults is discovered within certain models.Finally, we present the visualisation widget and show how it can be used to interpret results. Subject NV systemssystem characterisationquantum computinggate set tomography To reference this document use: http://resolver.tudelft.nl/uuid:908114ee-b57d-4f7e-869c-7c057a58326e Part of collection Student theses Document type bachelor thesis Rights © 2022 David Vos Files PDF GST_for_NV_systems.pdf 1.64 MB Close viewer /islandora/object/uuid:908114ee-b57d-4f7e-869c-7c057a58326e/datastream/OBJ/view