Comparação entre estratégias de correção de erros para sistemas quânticos

Abstract

—In this article, we analise the problem of error correction for quantum systems. After a short introduction to quantum error correction formalism, two strategies are compared: the usual syndrome-table decoding and the quantum trellis decoding. The main contribution in this article is to provide a tutorial dealing speci fi cally with decoding issues concerning quantum error correcting codes. The second contribution consists in a modi fi cation of the usual construction of quantum trellises in order to simplify it when applied speci fi cally to quantum error detection.