Trapping and Sympathetic Cooling of Boron Ions

We demonstrate the trapping and sympathetic cooling of B${}^{+}$ ions in a Coulomb crystal of laser-cooled Ca${}^{+}$, We non-destructively confirm the presence of the both B${}^{+}$ isotopes by resonant excitation of the secular motion. The B${}^{+}$ ions are loaded by ablation of boron and the secular excitation spectrum also reveals features consistent with ions of the form B${}_n^{+}$.