利用全量子理论,研究了真空场与耦合全同V型三能级原子相互作用过程中场熵的演化特性.讨论了系统初始状态、原子间偶极相互作用和Kerr介质的三阶非线性系数对场熵演化特性的影响.数值计算结果表明:初始时刻原子基态和激发态处于合适的叠加态时,场熵呈现出周期性振荡,其振荡频率和幅度与原子间的耦合常数、Kerr介质的三阶非线性系数有很大关系.由此可见,场熵敏感于系统初始时刻原子的状态.
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