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arXiv 1202.6446quant-phcond-mat.quant-gas
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光晶格中超冷原子高保真团簇态的产生

High-fidelity cluster state generation for ultracold atoms in an optical lattice

Kensuke Inaba, Yuuki Tokunaga, Kiyoshi Tamaki, Kazuhiro Igeta, Makoto Yamashita

摘要:

提出了一种在光晶格中以可扩展的方式产生超冷原子高保真多体自旋纠缠的方法,该方法适用于基于测量的量子计算.为了进行基于微扰自旋-自旋相互作用的所需操作,我们建议积极利用通常在微扰处理中被忽略但包含在原子的Hubbard Hamilton中的额外自由度(DOF),例如,(伪)电荷和轨道DOF。我们的方法同时实现了高保真度,短的操作时间,和可扩展性,通过克服以下基本问题:提高相互作用强度,缩短操作时间,打破了相互作用的微扰条件,不可避免地引起不必要的相关性之间的自旋和额外的自由度。

英文摘要:

We propose a method for generating high-fidelity multipartite spin-entanglement of ultracold atoms in an optical lattice in a short operation time with a scalable manner, which is suitable for measurement-based quantum computation. To perform the desired operations based on the perturbative spin-spin interactions, we propose to actively utilize the extra degrees of freedom (DOFs) usually neglected in the perturbative treatment but included in the Hubbard Hamiltonian of atoms, such as, (pseudo-)charge and orbital DOFs. Our method simultaneously achieves high fidelity, short operation time, and scalability by overcoming the following fundamental problem: enhancing the interaction strength for shortening operation time breaks the perturbative condition of the interaction and inevitably induces unwanted correlations among the spin and extra DOFs.

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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