Sympathetic cooling of ${}^{40}{\text{Ca}}^{+}$ - ${}^{27}{\text{Al}}^{+}$ ion pair crystal in a linear Paul trap

Jun-juan Shang, Kai-feng Cui, Jian Cao +3

The ${}^{27}$Al${}^{+}$ ion optical clock is one of the most attractive optical clocks due to its own advantages, such as low blackbody radiation shift at room temperature and insensitiv…