Measurement-induced phase transition arises from the competition between a deterministic quantum evolution and a repeated measurement process. We explore the measurement-induced phase transition through the Quantum Fisher Information in two different metrological scenarios. We demonstrate through the scaling behavior of the quantum Fisher information the transition of the multi-partite entanglement across the phases. In analogy with standard quantum phase transition, we reveal signature of a measurement-induced phase transition in the non-analytic behaviour of the quantum Fisher information as the measurement strength approaches the critical value. Our results offer novel insights into the features of a quantum systems undergoing measurement-induced phase transition and indicate potential avenues for further exploration in the field of quantum physics.
@article{arxiv.2302.10132,
title = {Metrology and multipartite entanglement in measurement-induced phase transition},
author = {Giovanni Di Fresco and Bernardo Spagnolo and Davide Valenti and Angelo Carollo},
journal= {arXiv preprint arXiv:2302.10132},
year = {2024}
}