Quantum Secure Direct Communication Based on Orbital Angular Momentum
The existing quantum secure direct communication(QSDC)proto-cols mainly make use of the spin angular momentum and entangled photons,to realize direct transmission of confidential information.But those protocols'capacity is low,only one-bit information.On the other hand,the orbital angular momentum(OAM)of a photon can be theoretically evaluated from minus infinity to infinity,and the angular momentum states of different orbits are orthogonal to each other.Given that,in this paper,we propose a quantum secure direct communication scheme based on OAM.Specifically,taking OAM of photons as the information carrier,the data of information is segmented and high-capacity coding in quantum secure direct communication is realized through the segmentation of sector states.
Orbital angular momentum Direct communication Sector state coding
Hong Lai Liling Zhang Yanrong Zhu
School of computer and information science,Southwest University Chongqing,China
国际会议
2019国图灵大会(ACM Turing Celebration conference-China 2019 )
成都
英文
965-974
2019-05-17（万方平台首次上网日期，不代表论文的发表时间）