Quantum Speed Limits for Leakage and Decoherence.

  title={Quantum Speed Limits for Leakage and Decoherence.},
  author={Iman Marvian and Daniel A. Lidar},
  journal={Physical review letters},
  volume={115 21},
We introduce state-independent, nonperturbative Hamiltonian quantum speed limits for population leakage and fidelity loss, for a gapped open system interacting with a reservoir. These results hold in the presence of initial correlations between the system and the reservoir, under the sole assumption that their interaction and its commutator with the reservoir Hamiltonian are norm bounded. The reservoir need not be thermal and can be time dependent. We study the significance of energy mismatch… 

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This is conceptually similar to the phenomenon of accelerated decoherence via the inverse-Zeno effect

    A similar phenomenon is encountered in the study of the speed limits for the implementation of two-party quantum operations

      If this is not the case, we can always shift the Hamiltonian by a constant and make the minimum energy in I equal to zero