Abstract
We study the behaviors of quantum correlation for two independent gravitationally polarizable subsystems interacting with fluctuating quantum gravitational field. We firstly derive the master equation that the system evolution obeys. Then we discuss the generation, revival, attenuation and enhancement of quantum correlation, which are dependent on the initial state, separation and polarization of the two subsystems. It is shown that quantum correlation for correlated initial state can be preserved effectively from the quantum gravitational fluctuation when the separation between the two subsystems is sufficiently small. Compared with the entanglement behaviors, it is shown that quantum correlation presents better robustness than entanglement, which may be helpful to quantum information processing. Furthermore, the initial state, separation and polarization of the subsystems give us more freedom to manipulate the behaviors of quantum correlation under quantum gravitational decoherence. Our study would throw light on our exploration of quantum gravity.
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