Suboptimal quantum-error-correcting procedure based on semidefinite programming
Suboptimal quantum-error-correcting procedure based on semidefinite programming
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DOI：
10.1103/physreva.71.022322
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发表时间：
2005-02
影响因子：
2.9
通讯作者：
N. Yamamoto;S. Hara;K. Tsumura
中科院分区：
文献类型：
--
作者：
N. Yamamoto;S. Hara;K. Tsumura
In this paper, we consider a simplified error-correcting problem: for a fixed encoding process, to find a cascade connected quantum channel such that the worst fidelity between the input and the output becomes maximum. With the use of the one-to-one parametrization of quantum channels, a procedure finding a suboptimal error-correcting channel based on a semidefinite programming is proposed. The effectiveness of our method is verified by an example of the bit-flip channel decoding.
