Bose-Einstein Condensation of Atoms in a Uniform Potential
Bose-Einstein Condensation of Atoms in a Uniform Potential
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DOI：
10.1103/physrevlett.110.200406
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发表时间：
2013-05-16
影响因子：
8.6
通讯作者：
Hadzibabic, Zoran
中科院分区：
文献类型：
--
作者：
Gaunt, Alexander L.;Schmidutz, Tobias F.;Hadzibabic, Zoran
我们在光箱阱的（准）均匀三维势场中观测到了原子气体的玻色 - 爱因斯坦凝聚。在凝聚体的双模动量分布以及各向异性的飞行时间膨胀中可以看到凝聚现象。临界温度与均匀玻色气体的理论预测相符。非凝聚量子简并气体的动量分布也明显不同于传统的谐势阱样品情况，并且接近均匀系统中的预期分布。我们在物质波干涉实验中证实了凝聚体的相干性。我们的实验为多体物理的基础研究开辟了许多新的可能性。
We have observed the Bose-Einstein condensation of an atomic gas in the (quasi)uniform three-dimensional potential of an optical box trap. Condensation is seen in the bimodal momentum distribution and the anisotropic time-of-flight expansion of the condensate. The critical temperature agrees with the theoretical prediction for a uniform Bose gas. The momentum distribution of a noncondensed quantum-degenerate gas is also clearly distinct from the conventional case of a harmonically trapped sample and close to the expected distribution in a uniform system. We confirm the coherence of our condensate in a matter-wave interference experiment. Our experiments open many new possibilities for fundamental studies of many-body physics.