Five-partite entanglement generation between two optical frequency combs in a quasi-periodic χ(2) nonlinear optical crystal

被引：7
作者：
He, Guangqiang [1 ,2 ,3 ]
Sun, Yu [1 ]
Hu, Linxi [1 ]
Zhang, Renhui [1 ]
Chen, Xikun [1 ]
Wang, Jindong [4 ]
机构：
[1] Shanghai Jiao Tong Univ, Elect Engn Dept, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China
[2] East China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China
[3] Chinese Acad Sci, Inst Informat Engn, State Key Lab Informat Secur, Beijing 100093, Peoples R China
[4] South China Normal Univ, Guangdong Prov Key Lab Quantum Engn & Quantum Mat, Guangzhou 510006, Guangdong, Peoples R China
来源：
SCIENTIFIC REPORTS | 2017年 / 7卷
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1038/s41598-017-09346-3
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
We theoretically prove five-partite entanglement can be produced among modes of two simultaneously generated optical frequency combs via second-order nonlinear interaction in a designed periodically poled lithium niobat (PPLN) crystal. An extendible model is proposed to analyze the entanglement characteristics of generated comb modes by applying van Loock and Furusawa criteria. Our proposal provides a potential approach for generating multipartite entangled states, the so-called cluster states, which are the key resources for quantum computation. Moreover, simultaneously generation of two entangled combs can provide much higher efficiency to generate cluster states.
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页数：8
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