A Large-alphabet Quantum Key Distribution Protocol Using Orbital Angular Momentum Entanglement

被引：27

作者：

Zhao Sheng-Mei ^{[1
]}

Gong Long-Yan ^{[1
,2
]}

Li Yong-Qiang ^{[1
]}

Yang Hua ^{[1
]}

Sheng Yu-Bo ^{[1
]}

Cheng Wei-Wen ^{[1
]}

机构：

[1] Nanjing Univ Posts & Telecommun, Inst Signal Proc & Transmiss, Nanjing 210003, Jiangsu, Peoples R China

[2] Nanjing Univ Posts & Telecommun, Dept Appl Phys, Nanjing 210003, Jiangsu, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2013年 / 30卷 / 06期

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

OPTICAL COMMUNICATIONS; BELL THEOREM; CRYPTOGRAPHY; TURBULENCE; STATES;

D O I：

10.1088/0256-307X/30/6/060305

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We experimentally demonstrate a quantum key distribution protocol using entangled photon pairs in orbital angular momentum (OAM). Here Alice uses a fixed phase hologram to modulate her OAM state on one photon with a spatial light modulator (SLM), while Bob uses the designed.. different phase holograms for his N-based keys on the other photon with his SLM. With coincidences, Alice can fully retrieve the keys sent by Bob without reconciliation. We report the experiment results with N = 3 and OAM eigenmodes vertical bar l = +/- 1 >, and discuss the security from the light path and typical attacks.

引用

页数：4

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