Recovery of Damaged Information and the Out-of-Time-Ordered Correlators.

  title={Recovery of Damaged Information and the Out-of-Time-Ordered Correlators.},
  author={Bin Yan and Nikolai A. Sinitsyn},
  journal={Physical review letters},
  volume={125 4},
  • B. YanN. Sinitsyn
  • Published 16 March 2020
  • Computer Science, Physics
  • Physical review letters
The evolution with a complex Hamiltonian generally leads to information scrambling. A time-reversed dynamics unwinds this scrambling and thus leads to the original information recovery. We show that if the scrambled information is, in addition, partially damaged by a local measurement, then such a damage can still be treated by application of the time-reversed protocol. This information recovery is described by the long-time saturation value of a certain out-of-time-ordered correlator of local… 

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