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arXiv 1707.07577cond-mat.quant-gascond-mat.dis-nn
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无序势场中超冷原子光谱函数的测量

Measurement of spectral functions of ultracold atoms in disordered potentials

Valentin V. Volchkov, Michael Pasek, Vincent Denechaud, Musawwadah Mukhtar, Alain Aspect, Dominique Delande, Vincent Josse

摘要:

本文报道了在由散斑场产生的三维无序势场中,非相互作用超冷原子的光谱函数的测量。通过改变2个数量级的无序强度,我们观察到从“量子”微扰制度的低无序的“经典”制度在较高的无序强度的交叉,并找到一个很好的协议与数值模拟。该方法依赖于使用状态依赖的无序和原子的受控转移来创建定义明确的能态。这为三维安德森局域化的实验研究开辟了新的途径。

英文摘要:

We report on the measurement of the spectral functions of noninteracting ultracold atoms in a three-dimensional disordered potential resulting from an optical speckle field. Varying the disorder strength by 2 orders of magnitude, we observe the crossover from the "quantum" perturbative regime of low disorder to the "classical" regime at higher disorder strength, and find an excellent agreement with numerical simulations. The method relies on the use of state-dependent disorder and the controlled transfer of atoms to create well-defined energy states. This opens new avenues for experimental investigations of three-dimensional Anderson localization.

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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