量子纠错码的组合方法
A Combinatorial Approach to Quantum Error Correcting Codes
摘要:
从量子纠错码理论出发,研究了对称$n$ -顶点列图和图上的一组操作(着色规则)的组合问题:求两个给定图着色之间映射的最小操作序列.我们提供了一个明确的算法来计算我们的问题的解决方案,这反过来又直接关系到计算的基础量子纠错码的距离(性能)。计算量子码的距离是一个非常重要的问题,我们的方法可以用于构造更好的码。
英文摘要:
Motivated from the theory of quantum error correcting codes, we investigate a combinatorial problem that involves a symmetric $n$-vertices colourable graph and a group of operations (colouring rules) on the graph: find the minimum sequence of operations that maps between two given graph colourings. We provide an explicit algorithm for computing the solution of our problem, which in turn is directly related to computing the distance (performance) of an underlying quantum error correcting code. Computing the distance of a quantum code is a highly non-trivial problem and our method may be of use in the construction of better codes.
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