"Quantum error correction failure distributions: comparison of coherent and stochastic error models" posted to arXiv

Colin Trout published a paper on work performed with Dave Clader and the quantum group during an internship at the Johns Hopkins Applied Physics Laboratory. This work challenged the validity of making incoherent approximations to coherent error channels by analyzing output state distributions of encoded quantum states under the influence of both incoherent and coherent errors using exact wavefunction simulations. The main result implies that there is no direct mapping between the incoherent and coherent distributions and, therefore, incoherent approximations to coherent error channels typically will not capture the full physics of the real quantum error. The paper is available here.