Exploring the hierarchy of quantum correlations under thermal effects in two gravitational cat states

• URL: http://arxiv.org/abs/2404.19648v1
• Date: Tue, 30 Apr 2024 15:47:29 GMT
• Title: Exploring the hierarchy of quantum correlations under thermal effects in two gravitational cat states
• Authors: Elhabib Jaloum, Mohamed Amazioug,
• Abstract summary: We use concurrence to quantify the entanglement between the two gravitational cat states. We consider geometric quantum discord to quantify quantum correlations beyond entanglement. We also show that the temperature influences the degree of quantum correlations between the two gravitational cat states.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In this article, we investigate the hierarchy of quantum correlations between two gravitational cats states (modeled by two qubits). We use concurrence to quantify the entanglement between the two gravitational cat states. Quantum steering is employed to measure the steerabilities. We consider geometric quantum discord to quantify quantum correlations beyond entanglement. We show that the concurrence persists even when steerability is lost under thermal effects. We also show that the temperature influences the degree of quantum correlations between the two gravitational cat states. Besides, when the energy difference between the ground state and the first excited level becomes significant, the states become separable.

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