In this paper recent experiments with the one-atom maser or micromaser are described. They deal with the dynamical behavior of the field at parameter values where the field undergoes phase transitions. In the second part of the paper experiments with a single laser-cooled In+ ion in a modified Paul trap are discussed. The aim of this experiment is precision spectroscopy and cavity quantum electrodynamics on the basis of quantum jumps.
Herbert Walther, Herbert Walther,
"Laser experiments with single atoms in cavities and traps", Proc. SPIE 2799, Atomic and Quantum Optics: High-Precision Measurements, (6 May 1996); doi: 10.1117/12.239811; https://doi.org/10.1117/12.239811