In this article, we study thermal entanglement between two-coupled two-level atoms interacting with a single-mode cavity field. The cavity mode is assumed to be initially in the vacuum state and the detuning parameter is large. The thermal entanglement in this two-qubit system is quantified in terms of the concurrence, as a proper measure for two-qubit mixed states. We investigate how the thermal entanglement depends on temperature, dipole coupling between the atoms and detuning parameter. In addition, we shall use the generated thermally atomic entangled state as a quantum channel for teleportation and we mainly concentrate on the fidelity of teleportation. Finally, the relationship between the quantum coherence and entanglement will be discussed.

中文翻译：

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通过腔 QED 中的热原子纠缠态进行热纠缠和隐形传态

在本文中，我们研究了与单模腔场相互作用的两耦合两能级原子之间的热纠缠。假设腔模初始处于真空状态，失谐参数较大。这个双量子位系统中的热纠缠根据并发进行量化，作为双量子位混合状态的适当度量。我们研究热纠缠如何取决于温度、原子之间的偶极耦合和失谐参数。此外，我们将使用产生的热原子纠缠态作为隐形传态的量子通道，我们主要关注隐形传态的保真度。最后，讨论量子相干与纠缠之间的关系。