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- W4304986670 abstract "Information in a chaotic quantum system will scramble across the system, preventing any local measurement from reconstructing it. The scrambling dynamics is key to understanding a wide range of quantum many-body systems. Here we use Holevo information to quantify the scrambling dynamics, which shows a phase-transition-like behavior. When applying long random Clifford circuits to a large system, no information can be recovered from a subsystem of less than half the system size. When exceeding half the system size, the amount of stored information grows by two bits of classical information per qubit until saturation through another sharp unanalytical change. We also study critical behavior near the transition points. Finally, we use coherent information to quantify the scrambling of quantum information in the system, which shows similar phase-transition-like behavior." @default.
- W4304986670 created "2022-10-14" @default.
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- W4304986670 date "2022-05-27" @default.
- W4304986670 modified "2023-09-30" @default.
- W4304986670 title "Phase-transition-like behavior in information retrieval of a quantum scrambled random circuit system" @default.
- W4304986670 doi "https://doi.org/10.48550/arxiv.2205.14169" @default.
- W4304986670 hasPublicationYear "2022" @default.
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