During his PhD studies, Toke researched the phenomenon of atom number fluctuations in Bose-Einstein condensates. Bose-Einstein condensation has become an essential tool for exploring quantum physics and advancing quantum technology. Therefore, it is crucial to have a deep understanding of fundamental properties such as atom number fluctuations to ensure the precision and reliability of its applications.

Toke Vibel examined the impact of estimation errors in absorption imaging on measurements of atom number fluctuations. The findings not only contribute to the advancement of understanding of atom number fluctuations but also provide valuable insights into absorption imaging, which is relevant to the entire field of ultracold atoms.