A nonadditive quantum code

Details A nonadditive quantum code A nonadditive quantum code

1997-03-04

arxiv.org/abs/quant-ph/9703002v2

Phys.Rev.Lett.79:953-954,1997

Physics

Quantum Physics

2 pages, RevTeX. More information is available at http://www.research.att.com/~njas/doc/quant.html . Updated version includes

Scientific paper

10.1103/PhysRevLett.79.953

Up to now every good quantum error-correcting code discovered has had the structure of an eigenspace of an Abelian group generated by tensor products of Pauli matrices; such codes are known as stabilizer or additive codes. In this letter we present the first example of a code that is better than any code of this type. It encodes six states in five qubits and can correct the erasure of any single qubit.

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