Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei, 230026, People's Republic of China.
Phys Rev Lett. 2010 Mar 12;104(10):100502. doi: 10.1103/PhysRevLett.104.100502. Epub 2010 Mar 9.
We demonstrate the collapse and revival features of the entanglement dynamics of different polarization-entangled photon states in a non-Markovian environment. Using an all-optical experimental setup, we show that entanglement can be revived even after it suffers from sudden death. A maximally revived state is shown to violate a Bell's inequality with 4.1 standard deviations which verifies its quantum nature. The revival phenomenon observed in this experiment provides an intriguing perspective on entanglement dynamics.
我们展示了不同偏振纠缠光子态在非马尔可夫环境中的纠缠动力学的坍塌和复苏特征。使用全光学实验装置，我们表明即使纠缠经历了突然死亡，它也可以被重新恢复。一个最大程度恢复的状态被证明违反了一个具有 4.1 个标准差的贝尔不等式，这验证了其量子性质。在这个实验中观察到的复苏现象为纠缠动力学提供了一个有趣的视角。
