Experimental realization of narrowband four-photon Greenberger-Horne-Zeilinger state in a single cold atomic ensemble

被引：12

作者：

Dong, Ming-Xin ^{[1
,2
]}

Zhang, Wei ^{[1
,2
]}

Hou, Zhi-Bo ^{[1
,2
]}

Yu, Yi-Chen ^{[1
,2
]}

Shi, Shuai ^{[1
,2
]}

Ding, Dong-Sheng ^{[1
,2
]}

Shi, Bao-Sen ^{[1
,2
]}

机构：

[1] Univ Sci & Technol China, Key Lab Quantum Informat, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China

来源：

OPTICS LETTERS | 2017年 / 42卷 / 22期

基金：

中国国家自然科学基金;

关键词：

QUANTUM COMMUNICATION; ENTANGLEMENT; GENERATION; TELEPORTATION; RESONANCE;

D O I：

10.1364/OL.42.004691

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Multi-photon entangled states not only play a crucial role in research on quantum physics but also have many applications in quantum information fields such as quantum computation, quantum communication, and quantum metrology. To fully exploit the multi-photon entangled states, it is important to establish the interaction between entangled photons and matter, which requires that photons have narrow bandwidth. Here, we report on the experimental generation of a narrowband four-photon Greenberger-Horne-Zeilinger state with a fidelity of 64.9% through multiplexing two spontaneous four-wave mixings in a cold Rb-85 atomic ensemble. The full bandwidth of the generated GHZ state is about 19.5 MHz. Thus, the generated photons can effectively match the atoms, which are very suitable for building a quantum computation and quantum communication network based on atomic ensembles. (C) 2017 Optical Society of America

引用

页码：4691 / 4694

页数：4

共 38 条

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