Production of large 41K Bose-Einstein condensates using D1 gray molasses

• Verfasst von: Chen, Hao-Ze [VerfasserIn]
• Verfasst von: Yao, Xing-Can [VerfasserIn]
• Verfasst von: Wu, Yu-Ping [VerfasserIn]
• Verfasst von: Liu, Xiang-Pei [VerfasserIn]
• Verfasst von: Wang, Xiao-Qiong [VerfasserIn]
• Verfasst von: Wang, Yu-Xuan [VerfasserIn]
• Verfasst von: Chen, Yu-Ao [VerfasserIn]
• Verfasst von: Pan, Jian-Wei [VerfasserIn]
• Titel: Production of large 41K Bose-Einstein condensates using D1 gray molasses
• Verf.angabe: Hao-Ze Chen, Xing-Can Yao, Yu-Ping Wu, Xiang-Pei Liu, Xiao-Qiong Wang, Yu-Xuan Wang, Yu-Ao Chen and Jian-Wei Pan
• E-Jahr: 2016
• Jahr: 8 September 2016
• Fussnoten: Gesehen am 30.04.2020 ; Im Titel ist "41" in 41K hochgestellt
• Titel Quelle: Enthalten in: Physical review
• Ort Quelle: Woodbury, NY : Inst., 2016
• Jahr Quelle: 2016
• Band/Heft Quelle: 94(2016,3) Artikel-Nummer 033408, ? Seiten
• ISSN Quelle: 2469-9934
• DOI: doi:10.1103/PhysRevA.94.033408
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1696929008

Abstract

We use D1 gray molasses to achieve Bose-Einstein condensation of a large number of 41K atoms in an optical dipole trap. By combining a specific configuration of a compressed magneto-optical trap with D1 gray molasses, we obtain a cold sample of 2.4×109 atoms with a temperature as low as 42 μK. After magnetically transferring the atoms into the final glass cell, we perform a two-stage evaporative cooling. A condensate with up to 1.2×106 atoms in the lowest Zeeman state |F=1,mF=1⟩ is achieved in the optical dipole trap. Furthermore, we observe two narrow Feshbach resonances in the lowest hyperfine channel, which are in good agreement with theoretical predictions.