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arXiv quant-ph/0207022quant-ph
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用NMR实现非绝热几何量子计算

Implementations of Nonadiabatic Geometric Quantum Computation using NMR

Jiangfeng Du, Mingjun Shi, Jihui Wu, Xianyi Zhou, Rongdian Han

摘要:

几何相位由于其几何特性而具有一定的容错性,近年来在量子计算理论研究中得到了广泛的关注。到目前为止,只有一个绝热几何门的实验报告与核磁共振通过贝瑞相位。但它也有两个缺点:第一,Berry相的绝热条件使得这种门的速度很慢。第二,消除动态相位的额外操作。我们知道,几何相位既可以存在绝热(Berry相位),也可以存在非绝热(Aharonov-Anandan相位)。本文报道了利用核磁共振技术通过条件AA相实现非绝热几何门的首次实验结果。在我们的实验中,门可以做得更快,更容易,并消除了上述两个缺点。

英文摘要:

Recently, geometric phases, which is fault tolerate to certain errors intrinsically due to its geometric property, are getting considerable attention in quantum computing theoretically. So far, only one experiment about adiabatic geometric gate with NMR through Berry phase has been reported. However, there are two drawbacks in it. First, the adiabatic condition of Berry phase makes such gate very slowly. Second, the extra operation to eliminate the dynamic phase. As we know, geometric phase can exist both adiabatic(Berry phase) and nonadiabatic(Aharonov-Anandan phase). In this letter, we reports the first experimental realization of nonadiabatic geometric gate with NMR through conditional-AA phase. In our experiment the gates can be made faster and more easily, and the two drawbacks mentioned above are removed.

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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