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.

Di Fresco G., Spagnolo B., Valenti D., Carollo A. (2024). Metrology and multipartite entanglement in measurement-induced phase transition. QUANTUM, 8 [10.22331/q-2024-04-30-1326].

Metrology and multipartite entanglement in measurement-induced phase transition

Spagnolo B.;Carollo A.
2024-04-30

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.
30-apr-2024
Settore FIS/02 - Fisica Teorica, Modelli E Metodi Matematici
Di Fresco G., Spagnolo B., Valenti D., Carollo A. (2024). Metrology and multipartite entanglement in measurement-induced phase transition. QUANTUM, 8 [10.22331/q-2024-04-30-1326].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/639273
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