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Open Quantum Systems Decoherence
Origin and Limit of the Recovery of Damaged Information by Time Reversal
arXiv
Authors: Xiangyu Cao, Thomas Scaffidi
Year
2020
Paper ID
18980
Status
Preprint
Abstract Read
~2 min
Abstract Words
86
Citations
N/A
Abstract
Recently it was found that scrambled information can be partially recovered by a time-reversed evolution, even after being damaged by an intruder. We reconsider the origin of the information recovery, and argue that the presence of classical chaos does not preclude it and only leads to a quantitative reduction of the recovery ratio. We also show how decoherence (i.e. entanglement with the intruder) limits the recovery, by proving an upper bound on the recovery ratio in terms of the entangling power of the intruder's action.
Why This Paper Matters
- This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
- It adds a 2020 reference point for readers tracking recent quantum research.
- Recently it was found that scrambled information can be partially recovered by a time-reversed evolution, even after being damaged by an intruder.
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