Work

Metrology and multipartite entanglement in measurement-induced phase transition

Year: 2024

Type: article

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.

Source: Quantum

DOI: 10.22331/q-2024-04-30-1326

Authors: Giovanni Di Fresco, Bernardo Spagnolo, Davide Valenti, Angelo Carollo

Institution: University of Palermo

Language: English

Topic: Quantum many-body systems

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $215

Funder: Ministero dell'Università e della Ricerca