Optical pumping of long-lived quantum states is used to identify groups of ions in phase space and follow their transport. The principles and variants of a novel diagnostic method, as well as new physical aspects and applications, including space-dependent line narrowing, are demonstrated.
Luc Thévenaz, Camille Sophie Brès, Can Yao
Elyahou Kapon, Alexandru Mereuta, Andrei Caliman
Tobias Kippenberg, Camille Sophie Brès, Davide Grassani, Martin Hubert Peter Pfeiffer, Edgars Nitiss, Tianyi Liu