Orbital angular momentum uncertainty relations of entangled two-photon states

被引：1
|
作者：
Li, Wei [1 ,2 ,3 ]
Zhao, Shengmei [1 ,2 ]
机构：
[1] Nanjing Univ Posts & Telecommun, Inst Signal Proc & Transmiss, Nanjing 210003, Jiangsu, Peoples R China
[2] Nanjing Univ Posts & Telecommun, Key Lab Broadband Wireless Commun & Sensor Networ, Nanjing 210003, Jiangsu, Peoples R China
[3] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
来源：
EUROPEAN PHYSICAL JOURNAL D | 2021年 / 75卷 / 08期
基金：
中国国家自然科学基金;
关键词：
QUANTUM COMPUTATION; DIFFRACTION; INFORMATION; POSITION;
D O I：
10.1140/epjd/s10053-021-00243-z
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The inseparability of quantum correlation requires that the particles in the composite system be treated as a whole rather than treated separately, a typical example is the Einstein-Podolsky-Rosen (EPR) paradox. In this paper, we provide a theoretical study on the uncertainty relations of two kinds of bipartite observables in two-photon orbital angular momentum (OAM) entanglement, that is, the relative distance and centroid of the two photons at azimuth. We find that the uncertainty relations of the bipartite observables holds in any two-photon state, and they are separable in two-photon OAM entanglement. In addition, the entangled state behaves as a single particle in the bipartite representation. Finally, we find that the uncertainty relations of the bipartite observables can be used to manipulate the degree of the entanglement of an EPR state.
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页数：7
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