The entanglement properties of a single-mode vacuum field interacting with a pair of atoms are investigated by using the quantum reduced entropy, and the influences of the atomic dipole-dipole interaction on the degree of the entanglement are discussed.

• 摘要用量子约化熵研究了单模真空场与双原子相互作用的纠缠特性，讨论了原子偶极－偶极相互作用对其纠缠度的影响。