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Quantum repeater network coding scheme based on controller

A network coding and repeater technology, applied in the field of communication networks, can solve problems such as active attacks and resource consumption

Active Publication Date: 2015-07-15
苏州三六零智能安全科技有限公司
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Problems solved by technology

[0006] The technology of the present invention solves the problem: Aiming at the resource consumption and active attack problems existing in the existing quantum repeater network coding scheme, a quantum repeater network coding scheme with controllable EPR distribution and higher node communication security is designed

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  • Quantum repeater network coding scheme based on controller

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Embodiment Construction

[0063] A controller-based quantum repeater network coding scheme proposed by the present invention needs to solve the following two problems: (1) how to reduce the resource consumption of quantum repeater network coding in the presence of active attacks; (2) How to realize the secure communication between any two adjacent nodes in the quantum repeater network.

[0064] The main idea of ​​the present invention is: on the basis of the quantum repeater network coding scheme, a trusted third-party controller is introduced to judge whether there is an active attack through a one-time pad communication method, and then control the distribution of EPR pairs. In order to reduce the resource consumption of network coding when there is an active attack, realize remote quantum communication with the least resource consumption and higher security.

[0065] A single qubit is a linear combination of states |0> and |1>, as shown in the following equation:

[0066]

[0067] Where α and β ...

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Abstract

A quantum repeater network coding scheme based on a controller comprises three main steps as follows: step 1, a quantum repeater network model provided with the controller is established, and EPR (einstein-podolsky-rosen) pair allocation among repeater nodes is realized with an EPR pair distribution method; step 2, an LOCC (local operation and classical communication) is taken as a basis, a one-time pad communication method with an authentication function is introduced, QCon, QRem, QAdd, QRemAdd basic operations are provided to ensure that communication between any legal node and the controller in the coding process can resist active attack, and safety communication among nodes of a quantum repeater network is realized; step 3, in the quantum repeater network provided with the controller, EPR distributed to any adjacent repeater nodes is coded, and R1-Rn quantum entanglement channels are generated with a quantum channel generation method. The quantum repeater network coding scheme has practical value in the technical field of the communication network.

Description

technical field [0001] The invention relates to a controller-based quantum repeater network coding scheme, which belongs to the technical field of communication networks. Background technique [0002] Due to its unconditional security characteristics, quantum communication has gradually become a research hotspot in recent years. In order to improve the efficiency of quantum communication, the idea of ​​network coding has been introduced into quantum communication, and a series of achievements have been achieved in theoretical research. In 2007, Hayashi first analyzed the transmission problem of qubits in the butterfly topology, and proposed the XQQ (Crossing Two Qubits) protocol, which realized the cross-probabilistic transmission of two arbitrary quantum states and made quantum network coding possible. In order to improve the guarantee, Hayashi applied quantum teleportation (Quantum Teleportation) to quantum network coding from a new perspective, and designed a quantum netw...

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Application Information

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IPC IPC(8): H04L29/06H04L9/08
Inventor 尚涛李娇裴壮彭天丽刘建伟
Owner 苏州三六零智能安全科技有限公司
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