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Measurement-Induced Entanglement Phase Transition in Free Fermion Systems

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arxiv 2503.21427 v3 pith:2UK5HQMC submitted 2025-03-27 quant-ph cond-mat.dis-nn

Han-Ze Li , Jian-Xin Zhong , Xue-Jia Yu This is my paper · ORCID
classification quant-phcond-mat.dis-nn
keywords measurement-inducedmietentanglementfermionfreephasesystemsarea-law
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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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Cited by 1 Pith paper

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  1. Magic phase transitions in monitored gaussian fermions

    quant-ph 2025-07 conditional novelty 6.0 of 10

    Measurement-induced transitions in monitored free-fermion systems appear in the subleading logarithmic corrections to stabilizer Renyi entropies, not in the leading extensive magic.

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