Localization effects induced by decoherence in superpositions of many-spin quantum states

  title={Localization effects induced by decoherence in superpositions of many-spin quantum states},
  author={Gonzalo A. Alvarez and Dieter Suter},
  journal={Physical Review A},
The spurious interaction of quantum systems with their environment known as decoherence leads, as a function of time, to a decay of coherence of superposition states. Since the interactions between system and environment are local, they can also cause a loss of spatial coherence: correlations between spatially distant parts of the system are lost and the equilibrium states can become localized. This effect limits the distance over which quantum information can be transmitted, e.g., along a spin… 

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