Dataset for: Harnessing Magnetic Vortex Oscillations for Local Microwave Sources in Qubit Control

Abstract In this study, we explore the potential of magnetic vortices and anti-vortices as novel sources for generating nanometer-scale microwave fields. Utilizing a single-spin scanning magnetometer based on diamond NV centers, we investigated both static and dynamic magnetic properties of a permalloy thin square, focusing on the magnetization and vortex core responses. While static images revealed the standard magnetic configuration, we detected GHz-frequency AC fields strongly localized at the vortex core, as confirmed through ODMR contrast and Rabi frequency imaging. We attribute this observation to the dynamic circular motion of the vortex core and its associated oscillatory behavior. Simulations based on OOMMF and the Landau-Lifshitz-Gilbert (LLG) equation demonstrate that vortices and anti-vortices can generate GHz microwave fields that are several orders of magnitude more intense than external driving fields, with spatial localization on the scale of tens of nanometers. This research opens new possibilities for generating powerful, localized microwave fields that could effectively manipulate NV spin states, offering promising applications in quantum information processing and multi-NV quantum registers for advanced sensing. Description of files This dataset contains source data for the figures presented in the paper.