研究了一类杂化纠缠态在两种不同类型退相干信道下的纠缠动力学行为,以及退相干过程中出现的 纠缠猝死现象。计算了相位阻尼信道和退极化信道下的纠缠度,并分析了纠缠度随时间的变化。结果表明在相位阻尼信道下不会出现纠缠猝死现象； 在退极化信道下杂化纠缠态会经历纠缠猝死,纠缠度在某一特定的时间内衰减为零。

The entanglement dynamics behavior of a class of hybrid entangled state in two different quantum channels and entanglement sudden death phenomenon in the process of decoherence are investigated. The entanglement of phase damping channel and depolarization channel is calculated, and the entanglement change with time is analyzed. Results show that the entanglement sudden death phenomenon will not appear in the phase damping channel. The hybrid entangled state will undergo entanglement sudden death in the depolarization channel, and the entanglement will decay to zero within a certain time.