What type of study is this?

This is a Experimental Study study.

October 2, 2025Open Access

Narrow-line-mediated Sisyphus cooling in the ^3P₂ metastable state of strontium

Key Points

Efficient cooling of magnetically trapped strontium atoms was achieved using narrow-line-mediated sisyphus cooling.
The optical lattice created a dissipative state, facilitating continuous outcoupling with improved atom number.
By utilizing both doppler and sisyphus cooling methods, significant improvements in trapping efficiency were observed.
This method paves the way for next-generation quantum sensors with ultracold atomic beams and enhanced performance.

Abstract

We demonstrate narrow-line-mediated Sisyphus cooling of magnetically trapped strontium (Sr) in the 5s5p\, ^3P₂ state. A 641 nm standing-wave, blue-detuned from the 5s4d\, ^3D₃\, \, 5p4d\, ^3F₄ transition, creates a dissipative optical lattice in the ^3D₃ state. By combining Doppler cooling and Sisyphus cooling on the 5s5p\, ^3P₂\, 5s4d\, ^3D₃ transition at 2. 92 μm, we observed efficient cooling of magnetically trapped atoms. By optically pumping the atoms to the 5s5p\, ^3P₀ state, we facilitate continuous outcoupling via a moving optical lattice with two fold improvement in atom number. Our scheme applies to next-generation quantum sensors using continuous ultracold atomic beams.

Narrow-line-mediated Sisyphus cooling in the ^3P₂ metastable state of strontium

Key Points

Abstract

Cite This Study

Also Consider

Also Consider