Quantum Secure Direct Communication by Using Three-Dimensional Hyperentanglement

• 作者: 徐平 施锦 祝世宁 詹佑邦 龚彦晓
• 来源期刊: 理论物理通讯：英文版
• 学科: 工学
• 关键词: 量子安全直接通信 三维 量子通道 自由度 双光子 量子信息 光子传输 子秘密
• 年，卷（期）: 2011,（11）
• 页码范围: 831-836
• 页数: 6页
• 分类号: TN918.1|O413
• 语种: 英文

摘要

We propose two schemes for realizing quantum secure direct communication （QSDC） by using a set of ordered two-photon three-dimensional hyperentangled states entangled in two degrees of freedom （DOFs） as quantum information channels. In the first scheme, the photons from Bob to Alice are transmitted only once. After insuring the security of the quantum channels, Bob encodes the secret message on his photons. Then Alice performs single-photon two-DOF Bell bases measurements on her photons. This scheme has better security than former QSDC protocols. In the second scheme, Bob transmits photons to Alice twice. After insuring the security of the quantum channels, Bob encodes the secret message on his photons. Then Alice performs two-photon Bell bases measurements on each DOF. The scheme has more information capacity than former Q,SDC protocols.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	祝世宁		35	193	7.0	13.0
2	施锦		1	0	0.0	0.0
3	龚彦晓		1	0	0.0	0.0
4	徐平		2	1	1.0	1.0
5	詹佑邦		1	0	0.0	0.0