Construction and decoding of nonbinary quantum LDPC codes

被引：0
|
作者：
Shao J.-H. [1 ]
Bai B.-M. [1 ]
Lin W. [1 ]
Zhou L. [1 ]
机构：
[1] State Key Lab. of Integrated Service Networks, Xidian Univ.
来源：
Xi'an Dianzi Keji Daxue Xuebao/Journal of Xidian University | 2010年 / 37卷 / 06期
关键词：
BP algorithm; LDPC code; Quantum information; Quantum LDPC code;
D O I：
10.3969/j.issn.1001-2400.1010.06.005
中图分类号：
学科分类号：
摘要：
Nonbinary quantum codes are more suitable for error-correction in multi-level quantum systems. Based on stabilizer formalism over the finite field, a class of nonbinary quantum LDPC codes is presented in this paper. And the BP iterative decoding algorithm for these codes is described under the quantum depolarizing channel with the Monte Carlo simulation method. For example, a class of CSS structure 4-ary quantum LDPC codes is given with code rates 1/2 and 1/4. Compared with the present binary quantum LDPC codes of equivalent codelength, the channel threshold with 10-5FER is improved from 0.016 to 0.025.
引用
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页码：1005 / 1010
页数：5
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