Quantum correlations and their significance in quantum teleportation under PT-symmetric operation

In this article, we exploit the different notions of quantumness measure to understand the properties of the Heisenberg XY model with and without PT-symmetric operation. In the absence of PT-symmetry, we study the significance of different measures, namely entanglement and measurement-induced nonlocality (MIN), in the detection of the quantumness of the Heisenberg XY model. It is observed that the quantum correla-tions and teleportation fidelity monotonically decreases with respect to temperature. Furthermore, the intervention of PT-symmetric operation enhances the strengths of quantum correlation. In addition, we highlight the role of the system's parameters and PT-symmetric operation on the teleportation of a quantum state. Our results also emphasize that after the addition of PT-symmetric operation, the considered physical model remains a versatile resource to achieve successful teleportation of the quantum state. (c) 2023 Elsevier B.V. All rights reserved.

Automated summary

In this article, the properties of the Heisenberg XY model with and without PT-symmetric operation are explored using different measures of quantumness. In the absence of PT-symmetry, measures of entanglement and measurement-induced nonlocality (MIN) are found to be significant in detecting the quantumness of the model. It is observed that quantum correlations and teleportation fidelity decrease with temperature, but the intervention of PT-symmetric operation enhances quantum correlations. The results highlight the role of system parameters and PT-symmetric operation in quantum state teleportation.