Bipartite non-local correlations in a double-quantum-dot excitonic system

Quantum correlations, such as quantum entanglement (QE), measurement-induced non-locality (MIN) and Bell non-locality, are investigated in a system of two coupled quantum dots (QDs) entangled through their interaction with a cavity mode, including Förster and exciton–phonon interactions. When the two QDs are situated very close to and symmetrically about the antinode of the sustained longitudinal mode, the violation of Bell's inequality only occurs with strong MIN and QE. If one of the QDs is located very near to the node while the other one is located slightly far away from the node, the violation does not occur even with strong MIN and QE. When both QDs are located in the cavity in such a way that they see different cavity field amplitudes, the violation occurs with weak or strong MIN and QE. The generalized Rabi frequency acts as a control for the occurrence of these different types of the quantum correlation in the system, with MIN more general than the conventionally mentioned quantum non-locality related to the QE or violation of Bell's inequalities. (paper)