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arXiv 1405.4352cond-mat.quant-gasquant-ph
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平面超流体的涡旋陀螺成像

Vortex gyroscope imaging of planar superfluids

A. T. Powis, S. J. Sammut, T. P. Simula

摘要:

我们提出了一个强大的成像技术,使人们有可能区分准二维玻色-爱因斯坦凝聚体中的原子密度的一个单一的图像从反涡旋。在标准吸收成像之前倾斜平面冷凝物激发冷凝物的广义陀螺模式,揭示每个涡旋的符号和位置。这种技术预计,使实验测量的不可压缩的动能谱的冷凝物和观察的负温度相变的涡旋气体,驱动的二维超流湍流。

英文摘要:

We propose a robust imaging technique that makes it possible to distinguish vortices from antivortices in quasi-two-dimensional Bose--Einstein condensates from a single image of the density of the atoms. Tilting the planar condensate prior to standard absorption imaging excites a generalized gyroscopic mode of the condensate revealing the sign and location of each vortex. This technique is anticipated to enable experimental measurement of the incompressible kinetic energy spectrum of the condensate and the observation of a negative temperature phase transition of the vortex gas, driven by two-dimensional superfluid turbulence.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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