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Quantum Information Processing

Quantum codes construction from cyclic codes over matrix rings

Soham Ravikant Joshi, Shikha Patel, Om Prakash

Published Jun 9, 2026• 0 citations
Publisher
DOI
10.1007/s11128-026-05230-0

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QEC and EAQEC Codes from Hermitian Sums and Hulls of Cyclic Codes over F2×(F2+vF2)\mathbb{F}_2 \times (\mathbb{F}_2+v\mathbb{F}_2)F2​×(F2​+vF2​)
In this work, we determine the generator polynomials for the Hermitian hulls and Hermitian sums of cyclic codes defined over the composite ring F2×(F2+vF2)\mathbb{F}_2 \times (\mathbb{F}_2 + v\mathbb{F}_2)F2​×(F2​+vF2​), where v2=vv^2 = vv2=v. Based on these structures, we develop quantum error-correcting (QEC) codes by applying the Hermitian dual version of Quantum Construction~X to the obtained Hermitian hulls and sums. Moreover, by employing matrix product code methods on linear complementary dual (LCD) codes defined over the same ring, we derive families of entanglement-assisted quantum error-correcting (EAQEC) codes.
For an odd prime power q and R7=Fq+uFq+{\mathcal{R}}_{7}=\mathbb{F}_{q}+u \mathbb{F}_{q}+R7​=Fq​+uFq​+ vFq+wFq+zFq+u2Fq+wzFqv \mathbb{F}_{q}+w \mathbb{F}_{q}+z \mathbb{F}_{q}+u^{2} \mathbb{F}_{q}+w z \mathbb{F}_{q}vFq​+wFq​+zFq​+u2Fq​+wzFq​. Through this work we seek to construct new quantum codes and LCD codes by means of cyclic codes built on the ring R7{\mathcal{R}}_{7}R7​. By using cyclic codes containing their duals, we give quantum codes, we also give a method for the construction of LCD Codes over R7{\mathcal{R}}_{7}R7​.