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Wireless Communication Technology

A Novel Quantum Entanglement Wireless Relay Scheme and RQCP Protocol

Guangyue Lu

Published Jan 1, 2009• 0 citations
OpenAlex

Abstract

Wireless quantum communication is one of the most important parts in the future quantum communication.Quantum entanglement relay is one of the key technologies in wireless quantum communication systems.However,there are so many kinds of interference and noise in wireless channel that it is very hard to realize the relay of the quantum states.To solve the problem,the two quanta relay schemes based on mobile terminals and base stations are presented firstly.The layered structure of wireless quantum communication and the quantum states routing protocol(RQCP) in wireless transmission are presented also.Theory analysis results show that the scheme above can transmit quanta states although no EPR pairs shared by source and objective nodes,and the time delay in transmission has nothing to do with the number of wireless hopping.It proved that the model and scheme are optimal.

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Wireless quantum communication is one of the most important parts in the future quantum communication.Quantum entanglement relay is one of the key technologies in wireless quantum communication systems.However,there are so many kinds of interference and noise in wireless channel that it is very hard to realize the relay of the quantum states.To solve the problem,the two quanta relay schemes based on mobile terminals and base stations are presented firstly.The layered structure of wireless quantum communication and the quantum states routing protocol(RQCP) in wireless transmission are presented also.Theory analysis results show that the scheme above can transmit quanta states although no EPR pairs shared by source and objective nodes,and the time delay in transmission has nothing to do with the number of wireless hopping.It proved that the model and scheme are optimal.
According to quantum mechanics,quantum communication has the advantages in information security than the classical communication,and so it has been studied as new hot spot in communication field.Mobile quantum communication is one of the most important parts in the future quantum communication.Quantum entanglement relay is one of the key technologies in mobile quantum communication systems.However,there are so many kinds of interference and noise in wireless channel,that it is very hard to realize the relay of the quantum states.To address and solve the problem,the two quanta relay schemes based on mobile terminals and base stations are presented firstly.The layered structure of wireless quantum communication and the routing protocol of the quantum states transmission in wireless(QMRP) are presented also.Theory analysis results show that the scheme above can transmit quanta states with no EPR pairs shared by source and objective nodes,and the time delay in transmission has nothing to do with the number of wireless hopping.It proves that the model and scheme are optimal.
A novel service model of land quantum mobile communication systems and the scheme of quantum multiplexing relay were proposed.The two quantum entanglement purification method,one is based on the quantum controlled-not gate,the other is based on polarizing beam splitter,were compared then.Theoretical analysis results show that the proposed scheme can transmit quanta states with no EPR pairs shared by source and objective nodes,and the time delay in transmission has nothing to do with the number of wireless hopping and the distance of link.
A quantum routing scheme is proposed to teleport a quantum state from one quantum device to another wirelessly,even though the two devices do not share EPR pairs mutually.The scheme is based on entanglement swapping and quantum teleportation.The model of quantum wireless communication network and correlative communication protocol is presented.In order to be compatible with the conventional wireless communication network,the network architecture of a twotier database structure is proposed.In terms of qubit transmission time and security,performance analysis results show that the proposed scheme is superior to quantum relay routing scheme.The proposed scheme has high scalability and practicability.
The distributed wireless quantum communication network (DWQCN) has a distributed network topology and transmits information by quantum states. In this paper, we present the concept of the DWQCN and propose a system scheme to transfer quantum states in the DWQCN. The system scheme for transmitting information between any two nodes in the DWQCN includes a routing protocol and a scheme for transferring quantum states. The routing protocol is on-demand and the routing metric is selected based on the number of entangled particle pairs. After setting up a route, quantum teleportation and entanglement swapping are used for transferring quantum states. Entanglement swapping is achieved along with the process of routing set up and the acknowledgment packet transmission. The measurement results of each entanglement swapping are piggybacked with route reply packets or acknowledgment packets. After entanglement swapping, a direct quantum link between source and destination is set up and quantum states are transferred by quantum teleportation. Adopting this scheme, the measurement results of entanglement swapping do not need to be transmitted specially, which decreases the wireless transmission cost and transmission delay.
In this paper, a quantum routing mechanism is proposed to teleport a quantum state from one quantum device to another wirelessly even though these two devices do not share EPR pairs mutually. This results in the proposed quantum routing mechanism that can be used to construct the quantum wireless networks. In terms of time complexity, the proposed mechanism transports a quantum bit in time almost the same as the quantum teleportation does regardless of the number of hops between the source and destination. From this point of view, the quantum routing mechanism is close to optimal in data transmission time. In addition, in order to realize the wireless communication in the quantum domain, a hierarchical network architecture and its corresponding communication protocol are developed. Based on these network components, a scalable quantum wireless communication can be achieved.
In distributed wireless quantum communication networks, because of the storage of the clients, the EPR pairs are important resources. The lack of EPR pairs limits the size of networks. Besides, to accomplish quantum teleportation, both classical and quantum information need to be transmitted. We may have difficulty in building classical and quantum channels at the same time. To solve these problems, we introduce mesh structure into wireless quantum communication. The distributed wireless quantum networks can be improved by this mesh structure we proposed. Moreover, a quantum routing protocol based on quantum relay mechanism is proposed in this mesh structure.