CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Creation of 174Yb Bose–Einstein Condensates in a Crossed FORT |
ZHANG Meng-Jiao1,2, ZHANG Xi1,2, LIU Hui1,2, XIONG Zhuan-Xian1**, LV Bao-Long1, HE Ling-Xiang1 |
1Key Laboratory of Atomic Frequency Standards, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 2University of Chinese Academy of Sciences, Beijing 100049
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Cite this article: |
ZHANG Meng-Jiao, ZHANG Xi, LIU Hui et al 2014 Chin. Phys. Lett. 31 086701 |
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Abstract 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 106 atoms of 174Yb 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 2×104 atoms has been obtained in the crossed FORT, with an atomic peak density of ~8×1014 cm?3. The condensate lifetime exceeds 1 s.
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PACS: |
67.85.Hj
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(Bose-Einstein condensates in optical potentials)
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