Quantum error correction for continuously detected errors with any number of error channels per qubit
Quantum error correction for continuously detected errors with any number of error channels per qubit
复制标题
针对每个量子位任意数量的错误通道连续检测到的错误进行量子纠错
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
K. Jacobs
中科院分区：
文献类型：
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作者：
C. Ahn;H. Wiseman;K. Jacobs
Ahn，Wiseman和Milburn [Phys. Rev. A 67，052310（2003）]表明，反馈控制可以用作弱连续测量引起的误差的量子误差校正过程，给定每个量子比特一个完美测量的误差通道。在这里，我们指出，这种方法可以很容易地扩展到任意数量的错误通道每个量子比特。我们表明，由我们的方法生成的反馈协议在n个物理量子比特中编码n-2个逻辑量子比特，因此只需要比前面的情况多一个物理量子比特。
It was shown by Ahn, Wiseman, and Milburn [Phys. Rev. A 67, 052310 (2003)] that feedback control could be used as a quantum error correction process for errors induced by weak continuous measurement, given one perfectly measured error channel per qubit. Here we point out that this method can be easily extended to an arbitrary number of error channels per qubit. We show that the feedback protocols generated by our method encode n-2 logical qubits in n physical qubits, thus requiring just one more physical qubit than in the previous case.