Study of Ground-State Entanglement Breaking and Quantum Energy Teleportation

构造了量子能量隐形传态的最小模型，发现了能量与纠缠的关系。在量子电磁场系统中，通过QET协议证明了获得更多的基态涨落信息可以传送更多的能量。在一般的自旋链系统中，得到了能量-纠缠关系，并表明基态纠缠熵是一个与传送能量的平方成正比的量的上界。提出了一种利用量子霍尔边缘电流进行QET实验的可行方案。同时也验证了即使对于有限温度下的系统，QET仍然有效。

A minimal model of quantum energy teleportation (QET) was constructed and energy-entanglement relations are discovered. In the quantum electromagnetic field system, it was proven that getting more information about the ground-state fluctuation leads to teleporting more energy by QET protocols. In general spin-chain systems, the energy-entanglement relations were obtained and show that the ground-state entanglement entropy is a upper bound of a quantity proportional to the square of the teleported energy. A realistic proposal for QET experiment was proposed using quantum Hall edge current. It was also verified that even for the systems in finite temperature QET remains effective.