2 papers
alg-geom1997
Symmetric matrices and quantum codes
Vladimir D. Tonchev
This paper has been withdrawn since a Gilbert-Varshamov bound for general quantum codes has already appeared in Ekert and Macchiavello, Prys. Rev. Lett. 77, p. 2585, and a Gilbert-…
quant-ph1997
Quantum self-dual codes and symmetric matrices
Vladimir D. Tonchev
This paper has been withdrawn since a Gilbert-Varshamov bound for general quantum codes has already appeared in Ekert and Macchiavello, Prys. Rev. Lett. 77, p. 2585, and a Gilbert-…