Creation of Yb-174 Bose-Einstein Condensates in a Crossed FORT

Creation of Yb-174 Bose-Einstein Condensates in a Crossed FORT
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在交叉堡垒中产生 Yb-174 玻色-爱因斯坦凝聚态

DOI:
10.1088/0256-307x/31/8/086701
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发表时间:
2014-08
影响因子:
3.5
通讯作者:
He Ling-Xiang
He Ling-Xiang
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Liu Hui;Xiong Zhuan-Xian;Lv Bao-Long;He Ling-Xiang

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类碱土原子的量子简并气体是一类独特的体系,可用于量子模拟、量子计算和量子相变的研究。我们报道了镱原子玻色-爱因斯坦凝聚体的全光形成。大约10(6)个Yb-174原子被转移到远偏离共振光阱(FORT),然后通过蒸发冷却来冷却。相变发生在520 nK的临界温度。在交叉FORT中得到了一个含有约2 × 10(4)个原子的纯凝聚体,原子峰密度约为8 × 10(14)cm(-3)。冷凝液寿命超过1 s。
Quantum degenerate gases of alkaline-earth-like atoms are unique systems used for quantum simulation, quantum computing and studies of quantum phase transitions. We report an all-optical formation of Bose-Einstein condensates of ytterbium atoms. About 10(6) atoms of Yb-174 are transferred to a far-off-resonance optical trap (FORT) and then cooled by evaporative cooling. Phase transition occurs at the critical temperature of 520 nK. A pure condensate containing approximately 2 x 10(4) atoms has been obtained in the crossed FORT, with an atomic peak density of similar to 8 x 10(14) cm(-3). The condensate lifetime exceeds 1 s.
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