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arXiv 0907.1565quant-ph
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单原子光阱位置空间中的量子行走

Quantum Walk in Position Space with Single Optically Trapped Atoms

Michał Karski, Leonid Förster, Jai-Min Choi, Andreas Steffen, Wolfgang Alt, Dieter Meschede, Artur Widera

摘要:

量子漫步是著名的随机漫步的量子模拟,它构成了许多科学领域的模型和应用的基础。它的性质明显不同于经典的对应物,并可能导致广泛的应用在量子信息科学。在我们的实验中,我们实现了一个量子行走线上的单个中性原子的位置上的一维自旋相关的光晶格确定性离域。利用位置分辨荧光成像技术,对最终的波函数进行了局域量子态层析表征,并证明了其空间相干性。我们的系统允许观察量子到经典的转变,并铺平了道路的应用,如量子元胞自动机。

英文摘要:

The quantum walk is the quantum analogue of the well-known random walk, which forms the basis for models and applications in many realms of science. Its properties are markedly different from the classical counterpart and might lead to extensive applications in quantum information science. In our experiment, we implemented a quantum walk on the line with single neutral atoms by deterministically delocalizing them over the sites of a one-dimensional spin-dependent optical lattice. With the use of site-resolved fluorescence imaging, the final wave function is characterized by local quantum state tomography, and its spatial coherence is demonstrated. Our system allows the observation of the quantum-to-classical transition and paves the way for applications, such as quantum cellular automata.

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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