Path-orbital-angular-momentum high-dimensional hyperentangled photons from a warm atomic ensemble

被引：6
|
作者：
Hu, Qiwu [1 ]
Ren, Yuan [1 ]
Wang, Xutong [1 ]
Hu, Xiao-Min [2 ,3 ]
Jing, Jietai [1 ,4 ,5 ,6 ]
机构：
[1] East China Normal Univ, Sch Phys & Elect Sci, Joint Inst Adv Sci & Technol, State Key Lab Precis Spect, Shanghai 200062, Peoples R China
[2] Univ Sci & Technol China, CAS Key Lab Quantum Informat, Hefei 230026, Peoples R China
[3] Univ Sci & Technol China, CAS Ctr Excellence Quantum Informat & Quantum Phy, Hefei 230026, Peoples R China
[4] CAS Ctr Excellence Ultraintense Laser Sci, Shanghai 201800, Peoples R China
[5] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China
[6] Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China
来源：
PHYSICAL REVIEW A | 2022年 / 105卷 / 06期
基金：
中国国家自然科学基金; 上海市自然科学基金;
关键词：
ENTANGLEMENT; STATES; COMMUNICATION;
D O I：
10.1103/PhysRevA.105.062422
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We experimentally demonstrate a scheme for the preparation of high-dimensional hyperentangled photon pairs with path degree of freedom (DOF) and orbital-angular-momentum (OAM) DOF using beam displacer (BD) interferometers from a warm atomic ensemble. A strong Gaussian pump beam of fixed frequency passes through the BD to produce a superposition state of two paths. The biphoton state is generated from two parallel spontaneous four-wave mixing processes in the 85Rb vapor cell. We successfully detect the path entanglement, two-dimensional OAM entanglement, and three-dimensional OAM entanglement by selecting the appropriate measurement. Due to the advantages of the simplicity of our interaction system and high dimensionality of the narrowband hyperentangled photons we generated, such hyperentangled source from an atomic ensemble can be utilized to realize high-dimensional multiple-DOF quantum memory and quantum communication in the future.
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收藏
页数：6
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