Quantum Communications Systems

Gianfranco Cariolaro

Fu-Chen Zhu

Quantum entanglement and teleportation are the very strange phenomena and could not be discovered in classical physics. However,could teleportation communication be a superluminal communication? Could it surpass the limits in communication distance and speed of classical communication system? Study on quantum physics and quantum communication system indicates that quantum communication has a very limited practical prospect in submarine and free-space communication,though quantum entanglement communication is with some very fascinating features. So it is very important to do objective analysis on quantum communication.

Venkateswaran Kasirajan

Haoming Wang, Zhao Weikang, Nan Li

With the successful launch of quantum communication satellite, the boom of wireless quantum research and application is rising all over the world, and the security of quantum communication has reached a new height in battlefield communication, but from an objective point of view, this is a misunderstanding of it. Based on this, this paper analyzes the structure of the quantum communication system, and on this basis, makes necessary distinctions between the security, effectiveness and reliability of the communication system. It points out that eavesdropping can still be realized by utilizing the defects of the wireless quantum communication engineering, especially the suppression and interference of wireless quantum communication transmission can greatly affect the effectiveness of communication. Finally, the electronic countermeasures method of wireless quantum communication is summarized through research, which has important reference significance for promoting the application and expansion of quantum countermeasures in electronic countermeasures.

Ajey Lele

Muhammad Imansyah Basudewa, Khoirul Anwar, Linda Meylani

Quantum communication in a higher dimensional system provides a higher capacity, more secure, and smaller latency compared to that of quantum communications based on 2-dimensional system or qubit. This paper studies a simple design of quantum communications based on orbital angular momentum (OAM). We consider two system models for quantum communications based on OAM, i.e., (i) a general structure of a simple OAM-based quantum communication system and (ii) a simple quantum error correction coding scheme for 3-dimensional system or quantum ternary digit (qutrit). We theoretically evaluate the possible construction of OAM-based quantum communications supported by qutrit-based error corrections. We found that OAM-based quantum communications are possibly supported by the derived controlled-NOT (CNOT) gate and stabilizers for qutrit bit flip error corrections. The qutrit stabilizers have shown that they can completely correct all qutrit single bit-flip errors. The results are expected to open new development on qudit-based quantum communications and error corrections.