Author(s): P. Jurcevic, P. Hauke, C. Maier, C. Hempel, B. P. Lanyon, R. Blatt, and C. F. Roos
The collective excitations of a quantum many-body system of trapped ions is characterized in a new spectroscopic technique that probes the eigenmodes of the system. The technique allows the excited quasiparticles to be individually manipulated and measured.

[Phys. Rev. Lett. 115, 100501] Published Tue Sep 01, 2015