Error threshold estimates for surface code with loss of qubits
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従来の理論限界を大きく超える量子情報誤り訂正新技術 : 偏極解消トーラス 符号.京都大学プレスリリース.2012-06-15.We estimate optimal thresholds for surface codes in the presence of loss via an analytical method developed in statistical physics. The optimal threshold for the surface code is closely related to a special critical point in a finite-dimensional spin glass, which is disordered magnetic material.We compare our estimations to the heuristic numerical results reported in earlier studies. Further application of our method to the depolarizing channel, a natural generalization of the noise model, unveils its wider robustness even with loss of qubits.
- 2012-06-11
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