Expérimental
Laser cooled trapped ions are among the few physical systems in which quantum control has reached levels such that quantum information algorithms can be implemented (e.g. 2012 Nobel Prize for Physics awarded to David Wineland and Serge Haroche). Quantum logic operations have also recently been used to develop a completely new spectroscopic technique (the quantum logic spectroscopy) that allow for unprecedented precision in optical clocks and, more generally, to address atomic or molecular transitions in species that cannot be directly laser-cooled. This technique is based on the so-called « sympathetic cooling » in which two species of ions are trapped in the same device and one of them is laser-cooled while the other is cooled through Coulomb interactions. This technique will be implemented in an experiment at LMPQ.