New quantum codes constructed from some self-dual additive F_4-codes

05/30/2018

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by   Masaaki Harada, et al.

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For (n,d)= (66,17),(78,19) and (94,21), we construct quantum [[n,0,d]] codes which improve the previously known lower bounds on the largest minimum weights among quantum codes with these parameters. These codes are constructed from self-dual additive F_4-codes based on pairs of circulant matrices.