Physics – Quantum Physics
Scientific paper
2000-10-23
Physics
Quantum Physics
9 pages, LaTeX2e. Minor changes. Title changed by request of IEEE Trans. IT
Scientific paper
Knill introduced a generalization of stabilizer codes, in this note called Clifford codes. It remained unclear whether or not Clifford codes can be superior to stabilizer codes. We show that Clifford codes are stabilizer codes provided that the abstract error group has an abelian index group. In particular, if the errors are modelled by tensor products of Pauli matrices, then the associated Clifford codes are necessarily stabilizer codes.
Klappenecker Andreas
Roetteler Martin
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