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arXiv 1306.1082cond-mat.quant-gasphysics.atom-ph
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光晶格中超冷原子波包的产生和操纵

Production and manipulation of wave packets from ultracold atoms in an optical lattice

Poul L. Pedersen, Miroslav Gajdacz, Nils Winter, Andrew J. Hilliard, Jacob F. Sherson, Jan Arlt

摘要:

在光晶格和谐波磁阱的组合势中,可以通过晶格的强度调制形成物质波包。这些波包的生产和运动的分析提供了一个详细的了解系统的动力学演化。调制技术还允许原子从这样的波包到由晶格束缚的状态的可控转移(去激发)。因此,它作为一个分束器的物质波,可以选择性地解决不同的频带,使原子的准备在选定的局域化状态。波包产生和去激发的组合非常类似于众所周知的泵浦-探测光谱法。在这里,我们使用去激励的磁阱的非谐性的精密光谱。最后,我们证明了晶格调制可以用来激发物质波包,甚至更高的动量,产生快速的波包在精密测量的潜在应用。

英文摘要:

Within the combined potential of an optical lattice and a harmonic magnetic trap, it is possible to form matter wave packets by intensity modulation of the lattice. An analysis of the production and motion of these wave packets provides a detailed understanding of the dynamical evolution of the system. The modulation technique also allows for a controllable transfer (de-excitation) of atoms from such wave packets to a state bound by the lattice. Thus, it acts as a beam splitter for matter waves that can selectively address different bands, enabling the preparation of atoms in selected localized states. The combination of wave packet creation and de-excitation closely resembles the well-known method of pump-probe spectroscopy. Here, we use the de-excitation for precision spectroscopy of the anharmonicity of the magnetic trap. Finally, we demonstrate that lattice modulation can be used to excite matter wave packets to even higher momenta, producing fast wave packets with potential applications in precision measurements.

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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