56 citations · 269 across the 60 of their papers we have counts for
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Construction of -extremal optimal unimodular lattices in dimension 52
Masaaki Harada
An -extremal optimal unimodular lattice in dimension is constructed for the first time. This lattice is constructed from a certain self-dual -code by Construc…
Some optimal entanglement-assisted quantum codes constructed from quaternary Hermitian linear complementary dual codes
Masaaki Harada
We establish the existence of optimal maximal entanglement entanglement-assisted quantum codes for , , , , $(19,7,…
Quaternary Hermitian linear complementary dual codes
Makoto Araya, Masaaki Harada, Ken Saito
The largest minimum weights among quaternary Hermitian linear complementary dual codes are known for dimension . In this paper, we give some conditions for the nonexistence of q…
New doubly even self-dual codes having minimum weight 20
Masaaki Harada
In this note, we construct new doubly even self-dual codes having minimum weight for lengths , and . This implies that there are at least three inequivalent ex…