Bright four-color quadripartite entanglement from quasi-phase-matching cascaded nonlinear optical frequency conversion

被引：0
作者：
Wang, Junfeng [1 ,2 ]
Liu, Bo [1 ,2 ,3 ]
Liu, Shaopeng [1 ,2 ]
Sun, TingTing [1 ,2 ]
Zhao, Lilong [1 ,2 ]
Mao, Yaya [1 ,2 ]
Song, Zhenzhen [1 ,2 ]
Wu, Yongfeng [1 ,2 ]
机构：
[1] Nanjing Univ Informat Sci & Technol, Jiangsu Key Lab Optoelect Detect Atmosphere & Oce, Nanjing 210044, Jiangsu, Peoples R China
[2] Nanjing Univ Informat Sci & Technol, Sch Phys Optoelect Engn, Nanjing 210044, Jiangsu, Peoples R China
[3] Beijing Univ Post & Telecommun, Sch Elect Engn, Beijing 100876, Peoples R China
来源：
LASER PHYSICS LETTERS | 2019年 / 16卷 / 07期
基金：
中国国家自然科学基金;
关键词：
continuous-variable (CV) entanglement; cascaded frequency conversion; quantum networks; CONTINUOUS-VARIABLE ENTANGLEMENT; QUANTUM; GENERATION;
D O I：
10.1088/1612-202X/ab1fec
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose an experimentally feasible scheme to produce bright four-color continuous-variable entanglement by intracavity quasi-phase-matching cascaded nonlinear optical frequency conversion in only one optical superlattice. The second, third and fourth harmonics can be generated by frequency doubling of the input fundamental field at frequency w, the sum frequency of fundamental and second harmonic fields, and frequency doubling of the second harmonic field, respectively. The entanglement properties influenced by system parameters are theoretically discussed according to the sufficient inseparability criterion proposed by van Loock and Furusawa. Such compact multipartite continuous-variable entanglement has potential applications in quantum communication and computation networks.
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页数：5
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