https://doi.org/10.1140/epjp/s13360-025-07204-0
Regular Article
Metrology and correlation dynamics in a driven-dissipative cavity QED system accompanied with nonlinearities
1
Department of Mathematics, College of Science and Humanities, Prince Sattam bin Abdulaziz University, 11942, Al Kharj, Saudi Arabia
2
Department of Physics, Faculty of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), 11623, Riyadh, Saudi Arabia
3
School of Physical Sciences, University of Chinese Academy of Science, Yuquan Road 19A, 100049, Beijing, China
a
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Received:
9
October
2025
Accepted:
11
December
2025
Published online:
4
January
2026
Abstract
The generation of robust, metrologically useful quantum states in realistic open systems is contingent on a complex interplay between coherent dynamics, control fields, and environmental decoherence. Through comprehensive numerical simulations of a driven-dissipative cavity QED system, we systematically explore this interplay and uncover a set of non-trivial design principles for engineering practical quantum advantage. Our central finding reveals a critical trade-off between a state’s theoretical complexity and its operational resilience: we consistently demonstrate that the simpler entanglement structure generated by One-Axis Twisting (OAT) is significantly more robust than the more complex, yet fragile, states produced by Two-Axis Twisting. Furthermore, we establish that physical effects typically considered detrimental can be harnessed as protocol-dependent stabilization resources. Strong optical nonlinearities can create protected manifolds that shield the OAT state from decoherence, while strong counter-rotating interactions–a signature of the ultrastrong coupling regime–can actively stiffen the quantum state against metrologically harmful phase-space rotations. These results culminate in a revised design paradigm for quantum technologies: achieving practical quantum advantage necessitates a holistic co-design of the initial entangled state, the control protocol, and the intrinsic physical characteristics of the platform itself.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
