All-optical formation of quantum degenerate mixtures
All-optical formation of quantum degenerate mixtures
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DOI：
10.1103/physreva.79.021601
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发表时间：
2009-02-01
影响因子：
2.9
通讯作者：
Takahashi, Yoshiro
中科院分区：
文献类型：
--
作者：
Fukuhara, Takeshi;Sugawa, Seiji;Takahashi, Yoshiro
报道了用全光学方法实现了Yb同位素的量子简并混合气体。我们已经成功地通过交感冷却将相互作用的Yb-176原子冷却到玻色-爱因斯坦转变温度以下，与Yb-174原子的稳定凝聚体以排斥相互作用共存。我们观察到Yb-176原子在冷却到相变温度以下后迅速损失原子，这表明Yb-176凝聚体的崩塌。用共振冷却技术将Yb-173-Yb-174费米-玻色混合物冷却到量子简并区。
We report the realization of quantum degenerate mixed gases of ytterbium (Yb) isotopes using all-optical methods. We have succeeded in cooling attractively interacting Yb-176 atoms via sympathetic cooling down to below the Bose-Einstein transition temperature, coexisting with a stable condensate of Yb-174 atoms with a repulsive interaction. We have observed a rapid atom loss in Yb-176 atoms after cooling down below the transition temperature, which indicates the collapse of a Yb-176 condensate. The sympathetic cooling technique has been applied to cool a Yb-173-Yb-174 Fermi-Bose mixture to the quantum degenerate regime.