Quantum Error Detection II: Bounds

Details Quantum Error Detection II: Bounds Quantum Error Detection II: Bounds

1999-06-30

arxiv.org/abs/quant-ph/9906131v1

Physics

Quantum Physics

Scientific paper

In Part II we show that there exist quantum codes whose probability of undetected error falls exponentially with the length of the code and derive bounds on this exponent.The lower (existence) bound for stabilizer codes is proved by a counting argument for classical self-orthogonal quaternary codes. Upper bounds for any quantum codes are proved by linear programming. We present two general solutions of the LP problem. Together they give an upper bound on the exponent of undetected error. The upper and lower asymptotic bounds coincide for a certain interval of code rates close to 1.

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