Corpus ID: 118389654

Unsharp pointer observables and the structure of decoherence

  title={Unsharp pointer observables and the structure of decoherence},
  author={C'edric B'eny},
  journal={arXiv: Quantum Physics},
  • C'edric B'eny
  • Published 2008
  • Mathematics, Physics
  • arXiv: Quantum Physics
The theory of decoherence attempts to explain the emergent classical behaviour of a quantum system interacting with its quantum environment. In order to formalize this mechanism we introduce the idea that the information preserved in an open quantum evolution (or channel) can be characterized in terms of observables of the initial system. We use this approach to show that information which is broadcast into many parts of the environment can be encoded in a single observable. This supports a… Expand
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