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arXiv quant-ph/0511100quant-ph
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鲁棒逻辑门与现实量子计算

Robust Logic Gates and Realistic Quantum Computation

Li Xiao, Jonathan A. Jones

摘要:

复合旋转方法已经被用于开发一系列鲁棒的量子逻辑门,包括单量子比特门和双量子比特门,其在其实现中抵抗系统误差。基于BB1族复合旋转的单量子比特门已经在各种系统中进行了实验验证,但很少有人研究它们在扩展计算中的应用,迄今为止还没有相应的鲁棒双量子比特门的实验研究。在这里,我们描述了一个应用程序的鲁棒门的核磁共振(NMR)研究的近似量子计数。我们发现,BB1系列的鲁棒门确实是有用的,但相关的NB1,PB1,B4和P4系列的定制逻辑门是有用的,比最初预期的。

英文摘要:

The composite rotation approach has been used to develop a range of robust quantum logic gates, including single qubit gates and two qubit gates, which are resistant to systematic errors in their implementation. Single qubit gates based on the BB1 family of composite rotations have been experimentally demonstrated in a variety of systems, but little study has been made of their application in extended computations, and there has been no experimental study of the corresponding robust two qubit gates to date. Here we describe an application of robust gates to Nuclear Magnetic Resonance (NMR) studies of approximate quantum counting. We find that the BB1 family of robust gates is indeed useful, but that the related NB1, PB1, B4 and P4 families of tailored logic gates are less useful than initially expected.

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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