| Autor: |
Meng-Jiao Zhang, Xi Zhang, Hui Liu, Zhuan-Xian Xiong, Bao-Long Lv, Ling-Xiang He |
| Předmět: |
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| Zdroj: |
Chinese Physics Letters; Aug2014, Vol. 31 Issue 8, p1-1, 1p |
| Abstrakt: |
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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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