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arXiv 1001.3145quant-ph
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周期态的纠缠、量子傅里叶变换和Shor因子分解算法

Entanglement of Periodic States, the Quantum Fourier Transform and Shor's Factoring Algorithm

Yonatan Most, Yishai Shimoni, Ofer Biham

摘要:

Shor算法的预处理阶段生成一类称为周期态的量子态,对其应用量子傅立叶变换。这种状态在依赖于量子傅里叶变换的其他量子算法中也起着重要作用。由于纠缠被认为是量子计算加速的必要资源,我们分析了周期态的纠缠以及量子傅里叶变换对纠缠的影响。为此,我们推导出一个公式,评估周期态的Groverian纠缠措施。利用这个公式,我们解释了令人惊讶的结果,即在预处理阶段建立的周期态的Groverian纠缠只受到量子傅里叶变换的轻微影响。

英文摘要:

The preprocessing stage of Shor's algorithm generates a class of quantum states referred to as periodic states, on which the quantum Fourier transform is applied. Such states also play an important role in other quantum algorithms that rely on the quantum Fourier transform. Since entanglement is believed to be a necessary resource for quantum computational speedup, we analyze the entanglement of periodic states and the way it is affected by the quantum Fourier transform. To this end, we derive a formula that evaluates the Groverian entanglement measure for periodic states. Using this formula, we explain the surprising result that the Groverian entanglement of the periodic states built up during the preprocessing stage is only slightly affected by the quantum Fourier transform.

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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