Narrow-line-mediated Sisyphus cooling in the ${}^3{\mathrm{P}}_2$ metastable state of strontium

Chun-Chia Chen, Ryoto Takeuchi, Shoichi Okaba +1

We demonstrate narrow-line-mediated Sisyphus cooling of magnetically trapped strontium (Sr) in the $5s5p{}^3{\text{P}}_2$ state. A 641 nm standing-wave, blue-detuned from the $…