Quantum secure direct communication by entangled qutrits and entanglement swapping |
| |
Authors: | You-Bang Zhan Ling-Ling Zhang Qun-Yong Zhang |
| |
Affiliation: | aDepartment of Physics, Huaiyin Teachers College, Huaian 223001, PR China;bSchool of Physical Science and Technology, Suzhou University, Suzhou 215006, PR China |
| |
Abstract: | A protocol for quantum secure direct communication by using entangled qutrits and swapping quantum entanglement is proposed. In this protocol, a set of ordered two-qutrit entangled states is used as quantum information channels for sending secret messages directly. During the process of transmission of particles, the transmitted particles do not carry any secret messages and are transmitted only one time. The protocol has higher source capacity than protocols using usual two-dimensional Bell-basis states as quantum channel. The security is ensured by the unitary operations randomly performed on all checking groups before the particle sequence is transmitted and the application of entanglement swapping. |
| |
Keywords: | Quantum secure direct communication Entangled qutrit Swapping quantum entanglement |
本文献已被 ScienceDirect 等数据库收录! |