Generation of hyperentangled photon pairs based on lithium niobate waveguide  

作　　者：陈洋河 姜震 何广强 Yang-He Chen;Zhen Jiang;Guang-Qiang He(SJTU Pinghu Institute of Intelligent Optoelectronics,Department of Electronic Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;State Key Laboratory of Advanced Optical Communication Systems and Networks,Department of Electronic Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]SJTU Pinghu Institute of Intelligent Optoelectronics,Department of Electronic Engineering,Shanghai Jiao Tong University,Shanghai 200240,China [2]State Key Laboratory of Advanced Optical Communication Systems and Networks,Department of Electronic Engineering,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Chinese Physics B》2023年第9期172-176,共5页中国物理B（英文版）

基　　金：the Key-Area Research and Development Program of Guangdong Province of China(Grant No.2018B030325002);the National Natural Science Foundation of China(Grant No.62075129);the Open Project Program of SJTU-Pinghu Institute of Intelligent Optoelectronics(Grant No.2022SPIOE204);the Science and Technology on Metrology and Calibration Laboratory(Grant No.JLJK2022001B002)。

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.

关 键 词：hyperentanglement nonlinear photonic crystal lithium niobate waveguide 

分 类 号：O413[理学—理论物理]