Generation of hyperentangled photon pairs based on lithium niobate waveguide

被引：1
|
作者：
Chen, Yang-He [1 ,2 ]
Jiang, Zhen [1 ,2 ]
He, Guang-Qiang [1 ,2 ]
机构：
[1] Shanghai Jiao Tong Univ, SJTU Pinghu Inst Intelligent Optoelect, Dept Elect Engn, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, Dept Elect Engn, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China
来源：
CHINESE PHYSICS B | 2023年 / 32卷 / 09期
基金：
中国国家自然科学基金;
关键词：
hyperentanglement; nonlinear photonic crystal; lithium niobate waveguide; 03.67.Bg; 42.65.Lm; QUANTUM INFORMATION; SECURITY;
D O I：
10.1088/1674-1056/acd5c4
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Generation of hyperentangled photon pairs is investigated based on the lithium niobate straight waveguide. We propose to use the nonlinear optical process of spontaneous parametric down-conversion (SPDC) and a well-designed lithium niobate waveguide structure to generate a hyperentangled (in the polarization dimension and the energy-time dimension) two-photon state. By performing numerical simulations of the waveguide structure and calculating the possible polarization states, joint spectral amplitudes (JSA), and joint temporal amplitudes (JTA) of the generated photon pair, we show that the generated photon pair is indeed hyperentangled in both the polarization dimension and the energy-time dimension.
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页数：5
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