论文标题
可调声子驱动的木魔纠缠在室温下
Tunable phonon-driven magnon-magnon entanglement at room temperature
论文作者
论文摘要
我们报告了在升高的温度下，在两分量子量子系统中存在纠缠的稳态。我们考虑在两分抗铁磁铁中的两种磁通模式的耗散动力学，并与声子模式和外部旋转磁场进行相互作用。为了量化两分镁磁通纠缠，我们使用纠缠负性并计算其对温度和磁场的依赖性。我们提供的证据表明，磁子和声子模式之间的耦合对于纠缠是必要的，并且对于任何给定的声子频率和磁子轴承耦合速率，磁场幅度幅度始终存在磁场幅度和频率的范围，而磁通磁通剂仍在室温下。
We report the existence of entangled steady-states in bipartite quantum magnonic systems at elevated temperatures. We consider dissipative dynamics of two magnon modes in a bipartite antiferromagnet, subjected to interaction with a phonon mode and an external rotating magnetic field. To quantify the bipartite magnon-magnon entanglement, we use entanglement negativity and compute its dependence on temperature and magnetic field. We provide evidence that the coupling between magnon and phonon modes is necessary for the entanglement, and that, for any given phonon frequency and magnon-phonon coupling rate, there are always ranges of the magnetic field amplitudes and frequencies for which magnon-magnon entanglement persists at room temperature.
