Raman sideband cooling of ${}^{25}$Mg${}^{+}$ -${}^{27}$Al${}^{+}$ ions pair and observation of quantum logic spectra

Hong-Li Liu, Ze-Tian Xu, Zhi-Yu Ma +8

We perform quantum logic spectroscopy (QLS) on ${}^{27}$Al${}^{+}$ ion ${}^1$S${}_0$ - ${}^3$P${}_1$ transition, which is an important step toward the QLS based ${}^{27}$Al${}^{+}$ ion optical clock.…