Stock Sabine, Hadzibabic Zoran, Battelier Baptiste, Cheneau Marc, Dalibard Jean
Laboratoire Kastler Brossel, 24 rue Lhomond, 75005 Paris, France.
Phys Rev Lett. 2005 Nov 4;95(19):190403. doi: 10.1103/PhysRevLett.95.190403. Epub 2005 Nov 1.
We have observed phase defects in quasi-2D Bose-Einstein condensates close to the condensation temperature. Either a single or several equally spaced condensates are produced by selectively evaporating the sites of a 1D optical lattice. When several clouds are released from the lattice and allowed to overlap, dislocation lines in the interference patterns reveal nontrivial phase defects.
我们在接近凝聚温度的准二维玻色-爱因斯坦凝聚体中观测到了相位缺陷。通过选择性地蒸发一维光学晶格的位点，产生了单个或几个等间距的凝聚体。当从晶格中释放出几个云团并使其重叠时，干涉图案中的位错线揭示了非平凡的相位缺陷。
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