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arXiv · 2503.21427

Measurement-Induced Entanglement Phase Transition in Free Fermion Systems

Han-Ze Li·Jian-Xin Zhong·Xue-Jia Yu
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Abstract

Measurement-induced entanglement phase transitions (MIET) highlight how local measurements drive quantum systems between area-law and volume-law entangled states. This review surveys MIET in free fermion models, focusing on how unitary hopping competes with measurement-induced non-unitarity. We discuss controversies regarding the existence of MIET in one dimension, the impact of non-Hermitian skin effects, and potential experimental platforms. We conclude with open challenges, including feedback control and higher-dimensional extensions.

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Han-Ze Li, Jian-Xin Zhong, Xue-Jia Yu. 2025-03-27. Measurement-Induced Entanglement Phase Transition in Free Fermion Systems. https://doi.org/10.1088/1361-648x%2Fade7e5

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