The role of quantum resources in quantum energy teleportation

Quantum energy teleportation (QET) protocol illustrates that through local operations and classical communication, the local energy of the ground state of a many-body quantum system can be extracted. Unlike classical energy transmission, dissipation effects are greatly reduced in quantum energy teleportation. Energy extraction only requires classical information and local operations about the measurements. Quantum resources play a key role in this protocol, giving QET protocol quantum advantages over classical energy transmission. In this paper, we investigate the role of quantum resources in quantum energy teleportation. We find that quantum resources can improve the energy extraction efficiency of QET, and find the necessary and sufficient conditions for the minimal QET. We construct a quantum circuit for simulation of the minimal QET model and provide the numerical results of QET in Gibbs state and spin-chain system to verify our conclusions.