Towards scalable active steering protocols for genuinely entangled state manifolds

We introduce and analyze an active steering protocol designed to target multipartite entangled states. The protocol involves multiple qubits subjected to weak Bell-pair measurements with active feedback, where the feedback operations are optimized to maximize the quantum Fisher information. Our sche...

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Bibliographic Details
Main Authors: Samuel Morales, Silvia Pappalardi, Reinhold Egger
Format: Article
Language:English
Published: American Physical Society 2025-05-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/PhysRevResearch.7.023170
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Summary:We introduce and analyze an active steering protocol designed to target multipartite entangled states. The protocol involves multiple qubits subjected to weak Bell-pair measurements with active feedback, where the feedback operations are optimized to maximize the quantum Fisher information. Our scheme efficiently reaches a genuinely entangled one-parameter state manifold. Numerical simulations for systems with up to 22 qubits suggest that the protocol is scalable and allows for high multipartite entanglement across the system.
ISSN:2643-1564