• openAccess   New quantum codes from evaluation and matrix-product codes 

      Galindo, Carlos; Hernando, Fernando; Ruano, Diego Elsevier (2014-07)
      Stabilizer codes obtained via CSS code construction and Steane's enlargement of subfield-subcodes and matrix-product codes coming from generalized Reed-Muller, hyperbolic and affine variety codes are studied. Stabilizer ...
    • openAccess   Quantum codes from affine variety codes and their subfield-subcodes 

      Galindo, Carlos; Hernando, Fernando Springer (2015-07)
      We use affine variety codes and their subfield-subcodes to obtain quantum stabilizer codes via the CSS code construction. With this procedure we get codes with good parameters, some of them exceeding the CSS quantum ...
    • openAccess   Quasi-cyclic constructions of quantum codes 

      Galindo, Carlos; Hernando, Fernando; Matsumoto, Ryutaroh Elsevier (2018-07)
      We give sufficient conditions for self-orthogonality with respect to symplec- tic, Euclidean and Hermitian inner products of a wide family of quasi-cyclic codes of index two. We provide lower bounds for the symplectic ...