Strong quantum energy teleportation
Hao Fan, Feng-Lin Wu, Lu Wang, Shuqian Liu, S.Y. Liu, S.Y. Liu, S.Y. Liu · Physical Review A · 2024
Quantum energy teleportation (QET) is an energy extraction protocol via local operation and classical communication (LOCC). In this paper, we analyze QET with the correlation matrix and find the essence of QET is a quantum steering process. We propose an extended QET called strong QET protocol and define the QET passive state, which shows that quantum correlation is not a sufficient condition for QET. We also compare QET in noisy channels with direct energy extraction schemes, which indicates the advantage of our method in dealing with quantum operations. Furthermore, we extend the method to the $N$-qubit QET and give numerical examples.