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.
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|Publication status||Published - 2012 Jun 11|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics