Measurement-induced transitions in monitored free-fermion systems appear in the subleading logarithmic corrections to stabilizer Renyi entropies, not in the leading extensive magic.
Measurement-Induced Entanglement Phase Transition in Free Fermion Systems
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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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Magic phase transitions in monitored gaussian fermions
Measurement-induced transitions in monitored free-fermion systems appear in the subleading logarithmic corrections to stabilizer Renyi entropies, not in the leading extensive magic.