Monogamy of Gaussian quantum steering and entanglement in a hybrid qubit-cavity optomagnonic system with coherent feedback loop

• URL: http://arxiv.org/abs/2510.10334v1
• Date: Sat, 11 Oct 2025 20:39:27 GMT
• Title: Monogamy of Gaussian quantum steering and entanglement in a hybrid qubit-cavity optomagnonic system with coherent feedback loop
• Authors: Hamza Harraf, Mohamed Amazioug, Amjad Sohail, Rachid Ahl Laamara,
• Abstract summary: monogamy of quantum correlations is a fundamental principle in quantum information processing.<n>We investigate the monogamy of quantum steering and genuine tripartite entanglement in a hybrid qubit-cavity optomagnonic system.<n>Our results show that a coherent feedback loop can enhance entanglement and quantum steering under thermal effects.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The monogamy of quantum correlations is a fundamental principle in quantum information processing, limiting how quantum correlations can be shared among multiple subsystems. Here we propose a theoretical scheme to investigate the monogamy of quantum steering and genuine tripartite entanglement in a hybrid qubit-cavity optomagnonic system with a coherent feedback loop. Using logarithmic negativity and Gaussian quantum steering, we quantify entanglement and steerability, respectively. We verify the CKW-type monogamy inequalities which leads to steering monogamous through adjustments of the reflective parameter among three tripartite modes versus temperature. Our results show that a coherent feedback loop can enhance entanglement and quantum steering under thermal effects.

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