Information Retrieval and Criticality in Parity-Time-Symmetric Systems.


By investigating information flow between a general parity-time (PT-)symmetric non-Hermitian system and an environment, we find that the complete information retrieval from the environment can be achieved in the PT-unbroken phase, whereas no information can be retrieved in the PT-broken phase. The PT-transition point thus marks the reversible-irreversible… (More)
DOI: 10.1103/PhysRevLett.119.190401

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