title: Experimental demonstration of photonic entanglement collapse and revival.
abstract: 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.
authors.affiliation: Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei, 230026, People's Republic of China.
authors.forename: Jin-Shi
authors.initials: JS
authors.lastname: Xu
authors.forename: Chuan-Feng
authors.initials: CF
authors.lastname: Li
authors.forename: Ming
authors.initials: M
authors.lastname: Gong
authors.forename: Xu-Bo
authors.initials: XB
authors.lastname: Zou
authors.forename: Cheng-Hao
authors.initials: CH
authors.lastname: Shi
authors.forename: Geng
authors.initials: G
authors.lastname: Chen
authors.forename: Guang-Can
authors.initials: GC
authors.lastname: Guo