Quantum Entanglement Swapping between Two Multipartite Entangled States

被引：87
|
作者：
Su, Xiaolong [1 ,2 ]
Tian, Caixing [1 ,2 ]
Deng, Xiaowei [1 ,2 ]
Li, Qiang [1 ,2 ]
Xie, Changde [1 ,2 ]
Peng, Kunchi [1 ,2 ]
机构：
[1] Shanxi Univ, Inst Optoelect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China
[2] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China
来源：
PHYSICAL REVIEW LETTERS | 2016年 / 117卷 / 24期
基金：
中国国家自然科学基金;
关键词：
TELEPORTATION NETWORK; CONTINUOUS-VARIABLES; DETECTORS;
D O I：
10.1103/PhysRevLett.117.240503
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Quantum entanglement swapping is one of the most promising ways to realize the quantum connection among local quantum nodes. In this Letter, we present an experimental demonstration of the entanglement swapping between two independent multipartite entangled states, each of which involves a tripartite Greenberger-Horne-Zeilinger (GHZ) entangled state of an optical field. The entanglement swapping is implemented deterministically by means of a joint measurement on two optical modes coming from the two multipartite entangled states respectively and the classical feedforward of the measurement results. After entanglement swapping the two independent multipartite entangled states are merged into a large entangled state in which all unmeasured quantum modes are entangled. The entanglement swapping between a tripartite GHZ state and an Einstein-Podolsky-Rosen entangled state is also demonstrated and the dependence of the resultant entanglement on transmission loss is investigated. The presented experiment provides a feasible technical reference for constructing more complicated quantum networks.
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页数：5
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