Universality in volume-law entanglement of scrambled pure quantum states

The entanglement in a quantum system between a small region and the surrounding environment contains details about the whole state. Nakagawa et al. find a formula for the entanglement entropy of a class of thermal-like states and show that it can be applied more broadly to identify equilibrating sta...

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Bibliographic Details
Main Authors: Yuya O. Nakagawa, Masataka Watanabe, Hiroyuki Fujita, Sho Sugiura
Format: Article
Language:English
Published: Nature Publishing Group 2018-04-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-018-03883-9
Description
Summary:The entanglement in a quantum system between a small region and the surrounding environment contains details about the whole state. Nakagawa et al. find a formula for the entanglement entropy of a class of thermal-like states and show that it can be applied more broadly to identify equilibrating states.
ISSN:2041-1723