Metrology and multipartite entanglement in measurement-induced phase transition

• URL: http://arxiv.org/abs/2302.10132v4
• Date: Thu, 18 Apr 2024 16:23:27 GMT
• Title: Metrology and multipartite entanglement in measurement-induced phase transition
• Authors: Giovanni Di Fresco, Bernardo Spagnolo, Davide Valenti, Angelo Carollo,
• Abstract summary: Measurement-induced phase transition arises from the competition between a deterministic quantum evolution and a repeated measurement process. We demonstrate through the scaling behavior of the quantum Fisher information the transition of the multi-partite entanglement across the phases. 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.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: 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.

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