Recovery of Damaged Information and the Out-of-Time-Ordered Correlators · HackerPapers discussions

Recovery of Damaged Information and the Out-of-Time-Ordered Correlators — mentioned by refibrillator

Mon, 19 Aug 2024 05:58:26 GMT

Paper (2020): https://arxiv.org/pdf/2003.07267 As a layperson I found the first page to be more succinct and intuitive than the article. > Let Alice have such a processor that implements fast information scrambling during a reversible unitary evolution of many interacting qubits. She applies this evolution to hide an original state of one of her qubits, which we call the central qubit. The other qubits are called the bath. To recover the initial central qubit state, Alice can apply a time-reversed protocol. > Let Bob be an intruder who can measure the state of the central qubit in any basis…

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Recovery of Damaged Information and the Out-of-Time-Ordered Correlators — mentioned by kkylin

Sat, 15 Aug 2020 14:44:48 GMT

Looks like this is the paper: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.12... ArXiV: https://arxiv.org/abs/2003.07267

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Recovery of Damaged Information and the Out-of-Time-Ordered Correlators — mentioned by jostylr

Sat, 15 Aug 2020 12:59:35 GMT

Here's a non-paywalled article: https://ladailypost.com/lanl-simulating-quantum-time-travel-... Here is the preprint: https://arxiv.org/abs/2003.07267 They are using the linearity to say that the effect is not magnified as it would be classically, but it is in the context of repairing damage done by a measurement.

Paper and discussion history. A mention is not an endorsement.