Radiofrequency chain for performing hyperfine state transfers

• Grant number: 25/04611-1
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: May 01, 2025
• End date: April 30, 2026
• Field of knowledge: Physical Sciences and Mathematics - Physics - Atomic and Molecular Physics
• Principal Investigator: Patrícia Christina Marques Castilho
• Grantee: Thales do Espirito Santo Silva
• Host Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated research grant: 22/02709-6 - Quantum hydrodynamical instabilities in two-dimensional Bose gases, AP.PNGP.PI

Abstract

Manipulating the internal state of atoms is a powerful tool when dealing with ultracold atomic systems. Radiofrequency and microwave transitions are widely used with this purpose enabling a partial or a full transfer between the different hyperfine states. This technique can be used to produce atomic mixtures of the same atomic species and to selectively image a fraction of the atomic cloud in an almost non-destructive imaging technique. In this scientific initiation project, we will develop a highly efficient radiofrequency chain able to perform hyperfine state transfers between the two main ground-states of potassium-39 at about 460 MHz with ¿¿-pulses of the order of a few microseconds.