Bose–Einstein condensates in 1D- and 2D optical lattices
Bose–Einstein condensates in 1D- and 2D optical lattices
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DOI：
10.1007/s003400100744
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发表时间：
2001-12
期刊：
影响因子：
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通讯作者：
M. Greiner;I. Bloch;O. Mandel;T. Hänsch;T. Esslinger
中科院分区：
文献类型：
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作者：
M. Greiner;I. Bloch;O. Mandel;T. Hänsch;T. Esslinger
将铷原子的玻色-爱因斯坦凝聚体转化为一维和二维光学晶格势。通过突然将原子从囚禁势中释放出来，观察几千个膨胀量子气体的多物质波干涉图样，研究了格点势中凝聚态波函数的相位相干性。我们展示了如何任意相位梯度可以映射到周期性波函数通过应用程序的潜在梯度。此外，实验测得的动量分量的强度相比，在晶格中的凝聚波函数的理论模型。
Bose–Einstein condensates of rubidium atoms are transferred into one- and two-dimensional optical lattice potentials. The phase coherence of the condensate wavefunction in the lattice potential is studied by suddenly releasing the atoms from the trapping potential and observing the multiple matter-wave interference pattern of several thousand expanding quantum gases. We show how arbitrary phase gradients can be mapped onto the periodic wavefunction through the application of a potential gradient. Furthermore, the experimentally measured strength of the momentum components is compared to a theoretical model of the condensate wavefunction in the lattice.