Quantum Secure Direct Communication by Using Three-Dimensional Hyperentanglement

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...

Full description

Saved in:
Bibliographic Details
Published inCommunications in theoretical physics Vol. 56; no. 11; pp. 831 - 836
Main Author 施锦 龚彦晓 徐平 祝世宁 詹佑邦
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.11.2011
Subjects
Bells
Channels
Computer information security
Degrees of freedom
Mathematical analysis
Messages
Photons
Three dimensional
三维
光子传输
双光子
子秘密
自由度
量子信息
量子安全直接通信
量子通道
Online AccessGet full text

Cover

More Information
Summary: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.
Bibliography:quantum secure direct communication, hyperentanglement, Bell bases measurement
11-2592/O3
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.
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0253-6102
DOI:10.1088/0253-6102/56/5/08