Quantum darwinism in a mixed environment.

  title={Quantum darwinism in a mixed environment.},
  author={Michael Zwolak and Haitao Quan and Wojciech Zurek},
  journal={Physical review letters},
  volume={103 11},
Quantum Darwinism recognizes that we-the observers-acquire our information about the "systems of interest" indirectly from their imprints on the environment. Here, we show that information about a system can be acquired from a mixed-state, or hazy, environment, but the storage capacity of an environment fragment is suppressed by its initial entropy. In the case of good decoherence, the mutual information between the system and the fragment is given solely by the fragment's entropy increase. For… Expand

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