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International Conference on Modeling, Simulation, and Applied Optimization

Quantum codes from cyclic codes over a class of nonchain rings

Mustafa Sarı, İrfan Şiap

Published May 1, 2015• 3 citations
Publisher

Abstract

Lately, quantum error correcting codes have been considered as the Gray images of some special codes over various rings. In this study, we investigate the structure of the cyclic codes of arbitrary length over the finite nonchain ring Rp= Fp+vFp+···+vp-1Fpwhere vp= v and obtain quantum error correcting codes over Fpby using the Gray map defined in the work of Bayram and Siap (2014).

DOI
10.1109/icmsao.2015.7152240

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Lately, quantum error correcting codes have been considered as the Gray images of some special codes over various rings. In this study, we investigate the structure of the cyclic codes of arbitrary length over the finite nonchain ring Rp= Fp+vFp+···+vp-1Fpwhere vp= v and obtain quantum error correcting codes over Fpby using the Gray map defined in the work of Bayram and Siap (2014).
In this paper, we extend the results given in [3] to a nonchain ring Rp=Fp+vFp+⋯+vp−1FpR_p={\mathbb{F}}_p+v{\mathbb{F}}_p+{\cdots}+v^{p-1}{\mathbb{F}}_pRp​=Fp​+vFp​+⋯+vp−1Fp​ , where vp=vv^p=vvp=v and p is a prime. We determine the structure of the cyclic codes of arbitrary length over the ring RpR_pRp​ and study the structure of their duals. We classify cyclic codes containing their duals over RpR_pRp​ by giving necessary and sufficient conditions. Further, by taking advantage of the Gray map π{\pi}π defined in [4], we give the parameters of the quantum codes of length pn over Fp{\mathbb{F}}_pFp​ which are obtained from cyclic codes over RpR_pRp​ . Finally, we illustrate the results by giving some examples.
The key objective of this paper is to study the cyclic codes over mixed alphabets on the structure of FqPQ, where P=Fq[v]⟨v3−α22v⟩ and Q=Fq[u,v]⟨u2−α12,v3−α22v⟩ are nonchain finite rings and αi is in Fq/{0} for i∈{1,2}, where q=pm with m≥1 is a positive integer and p is an odd prime. Moreover, with the applications, we obtain better and new quantum error-correcting (QEC) codes. For another application over the ring P, we obtain several optimal codes with the help of the Gray image of cyclic codes.
We study the structural properties of the ring R = F p + uF p + u 2 F p + u 3 F p , where p = 2 is a prime and u 4 = u 3 , as well as the linear codes over R. We investigate the generator's cyclic codes and their dual codes over R.An isometric Gray map from R to F 4 p is defined.We offer an equivalence condition that cyclic codes must satisfy over R in order to include their dual.Moreover, we establish the existence of quantum error-correcting codes based on cyclic codes over R. Finally, under various criteria such as cyclic codes length and generator polynomial degree, we build quantum error-correcting codes over R which their dimensions are divided by p and 2 4 .
Encoding and Construction of Quantum Codes from (γ,Δ)(γ,Δ)(γ,Δ)-cyclic Codes over a Class of Non-chain Rings
Let Fq\mathbb{F}_qFq​ be a finite field of q=pmq=p^mq=pm elements where ppp is a prime and mmm is a positive integer. This paper considers (γ,Δ)(γ,Δ)(γ,Δ)-cyclic codes over a class of finite non-chain commutative rings Rq,s=Fq[v1,v2,…,vs]/⟨vi−vi2,vivj=vjvi=0⟩\mathscr{R}_{q,s}=\mathbb{F}_q[v_1,v_2,\dots,v_s]/\langle v_i-v_i^2,v_iv_j=v_jv_i=0\rangleRq,s​=Fq​[v1​,v2​,…,vs​]/⟨vi​−vi2​,vi​vj​=vj​vi​=0⟩ where γγγ is an automorphism of Rq,s\mathscr{R}_{q,s}Rq,s​, ΔΔΔ is a γγγ-derivation of Rq,s\mathscr{R}_{q,s}Rq,s​ and 1≤i≠j≤s1\leq i\neq j\leq s1≤i=j≤s for a positive integer sss. Here, we show that a (γ,Δ)(γ,Δ)(γ,Δ)-cyclic code of length nnn over Rq,s\mathscr{R}_{q,s}Rq,s​ is the direct sum of (θ,ℑ)(θ,\Im)(θ,ℑ)-cyclic codes of length nnn over Fq\mathbb{F}_qFq​, where θθθ is an automorphism of Fq\mathbb{F}_qFq​ and ℑ\Imℑ is a θθθ-derivation of Fq\mathbb{F}_qFq​. Further, necessary and sufficient conditions for both (γ,Δ)(γ,Δ)(γ,Δ)-cyclic and (θ,ℑ)(θ,\Im)(θ,ℑ)-cyclic codes to contain their Euclidean duals are established. Then, we obtain many quantum codes by applying the dual containing criterion on the Gray images of these codes. These codes have better parameters than those available in the literature. Finally, the encoding and error-correction procedures for our proposed quantum codes are discussed.