Appearance of causality in process matrices when performing fixed-basis measurements for two parties

@article{Baumann2016AppearanceOC,
  title={Appearance of causality in process matrices when performing fixed-basis measurements for two parties},
  author={Veronika J. Baumann and vCaslav Brukner},
  journal={Physical Review A},
  year={2016},
  volume={93},
  pages={062324}
}
  • Veronika J. Baumann, vCaslav Brukner
  • Published 2016
  • Physics
  • Physical Review A
  • The recently developed framework for quantum theory with no global causal order allows for quantum processes in which operations in local laboratories are neither causally ordered nor in a probabilistic mixture of definite causal orders. The causal relation between the laboratories is described by the process matrix. We show that, if the inputs of the laboratories are measured in a fixed basis, one can introduce an effective process matrix which is operationally indistinguishable from the… CONTINUE READING

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