Role of mechanical effects on the excitation spectra of microwave-dressed Rydberg states in a cold atomic cloud
Phys. Rev. A 112, 013121 – Published 25 July, 2025
DOI: https://doi.org/10.1103/fqjy-fhm2
Abstract
We explore the excitation spectra of cold atoms to the Rydberg state in the presence of microwave (MW) radiation as a function of MW frequency. The spectra reveal several features around the transition frequencies between adjacent Rydberg states. We argue that some of these features are indicative of variations in the Rydberg excitation probability while others result from the removal of atoms from the cold cloud as a consequence of a MW-induced strong dipole-dipole interatomic force. Our claim is supported by experimental observations and theoretical modeling.
Physics Subject Headings (PhySH)
- Atomic & molecular processes in external fields
- Cooling & trapping
- Interatomic & molecular potentials
- Light-matter interaction
- Lineshapes & shifts
- Rydberg gases
- Strong electromagnetic field effects
- Rydberg atoms & molecules
- Trapped atoms
- Polarizability
- Dipole approximation
- First-principles calculations
- Fluorescence spectroscopy
- Optical absorption spectroscopy
- Perturbative methods
- Pump-probe spectroscopy
- RF, microwave, & terahertz sources
- Rotating wave approximation
- Schroedinger equation
