Channel Steering

@article{Piani2014ChannelS,
  title={Channel Steering},
  author={Marco Piani},
  journal={Journal of The Optical Society of America B-optical Physics},
  year={2014}
}
  • M. Piani
  • Published 3 November 2014
  • Computer Science
  • Journal of The Optical Society of America B-optical Physics
We introduce and study the notion of steerability for channels. This generalizes the notion of steerability of bipartite quantum states. We discuss a key conceptual difference between the case of states and the case of channels: while state steering deals with the notion of “hidden” states, steerability in the channel case is better understood in terms of coherence of channel extensions, rather than in terms of “hidden” channels. This distinction vanishes in the case of states. We further argue… 
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An operational framework for Einstein-Podolsky-Rosen steering as a physical resource is presented and it is proved that two previously proposed quantifiers, the steerable weight and the robustness of steering, are also convex steering monotones.
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