Applications of quantum cryptographic switch: various tasks related to controlled quantum communication can be performed using Bell states and permutation of particles
Applications of quantum cryptographic switch: various tasks related to controlled quantum communication can be performed using Bell states and permutation of particles
复制标题
DOI：
10.1007/s11128-015-0987-z
复制
发表时间：
2015-01
影响因子：
2.5
通讯作者：
Kishore Thapliyal;A. Pathak
中科院分区：
文献类型：
--
作者：
Kishore Thapliyal;A. Pathak
近年来，人们利用量子纠缠研究了受控量子通信的几个方面（如双向受控态隐形传态、受控量子安全直接通信、受控量子对话等）。特别地，提出了大量利用量子比特纠缠实现双向受控态隐形传态的方案。在这里，我们提出了一套协议来说明仅使用贝尔态和粒子排列就可以实现与受控量子通信相关的所有这些任务。由于贝尔状态的产生和维持比多方纠缠容易得多，因此所提出的策略比现有的策略具有明显的优势。此外，本文提出的所有方案都可以看作是我们最近引入的量子密码开关概念的应用。讨论了信道上的振幅阻尼和相位阻尼噪声对协议性能的影响。
Recently, several aspects of controlled quantum communication (e.g., bidirectional controlled state teleportation, controlled quantum secure direct communication, controlled quantum dialogue, etc.) have been studied using-qubitentanglement. Specially, a large number of schemes for bidirectional controlled state teleportation are proposed using-qubit entanglement. Here, we propose a set of protocols to illustrate that it is possible to realize all these tasks related to controlled quantum communication using only Bell states and permutation of particles. As the generation and maintenance of a Bell state is much easier than a multi-partite entanglement, the proposed strategy has a clear advantage over the existing proposals. Further, it is shown that all the schemes proposed here may be viewed as applications of the concept of quantum cryptographic switch which was recently introduced by some of us. The performances of the proposed protocols as subjected to the amplitude damping and phase damping noise on the channels are also discussed.