Quantum Error Correction in Spatially Correlated Quantum Noise

Abstract

We consider quantum error correction of quantum-noise that is created by a local interaction of qubits with a common bosonic bath. The possible exchange of bath bosons between qubits gives rise to spatial and temporal correlations in the noise. We find that these kind of noise correlations have a strong negative impact on quantum error correction.Comment: 4 pages, 1 figure, final version with minor correction