coffee art

Café com Física

coffee art

08 de maio de 2013
Sala F-210

Eduardo Novais de Sá

Centro de Ciências Naturais e Humanas - UFABC

Surface code threshold in the presence of correlated errors (.pdf)

We study the fidelity of the surface code in the presence of correlated errors induced by the coupling of physical qubits to a bosonic environment. By mapping the time evolution of the system after one quantum error correction cycle onto a statistical spin model, we show that the existence of an error threshold is related to the appearance of an order-disorder phase transition in the statistical model in the thermodynamic limit. This allows us to relate the error threshold to bath parametersand to the spatial range of the correlated errors.

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