Classical BCH codes that contain their (Euclidean or Hermitian) dual codes can be used to construct quantum stabilizer codes; this correspondence studies the properties of such codes. It is shown that a BCH code of length n can contain its dual code only if its designed distance d=O(sqrt(n)), and the converse is proved in the case of narrow-sense codes. Furthermore, the dimension of narrow-sense BCH codes with small design distance is completely determined, and - consequently - the bounds on their minimum distance are improved. These results make it possible to determine the parameters of quantum BCH codes in terms of their design parameters.
Quantum $(r,δ)$-Locally Recoverable BCH and Homothetic-BCH Codes
Instituto Universitario de Matemáticas y Aplicaciones de Castellón and Departamento de Matemáticas, Universitat Jaume I(卡斯特利翁数学与应用大学研究所及卡斯特利翁大学数学系);Department of Information and Communications Engineering, Institute of Science Tokyo(东京科学大学信息与通信工程系)
A general framework describing the statistical discrimination of an ensemble of quantum channels is given by the name of quantum reading. Several tools can be applied in quantum reading to reduce the error probability in distinguishing the ensemble of channels. Classical and quantum codes can be envisioned for this goal. The aim of this paper is to present a simple but fruitful protocol for this task using classical error-correcting codes. Three families of codes are considered: Reed-Solomon codes, BCH codes, and Reed-Muller codes. In conjunction to the use of codes, we also analyze the role o…
在量子信息处理中,相移误差比量子位翻转误差发生的概率更大,因而前者对量子信息的干扰更大。这使得我们构造了非对称量子差错控制码$\Pr Z \geq \Pr X$来保护非对称信道上的量子信息。本文提出了两种利用生成多项式和定义经典循环码集合导出非对称量子循环码的一般方法。因此,该方法使我们能够构建几个家庭的非对称量子BCH,RS和RM码。最后,利用这些方法构造了非对称子系统码族。