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A Controller-Based Quantum Repeater Network Coding Scheme

A network coding and repeater technology, applied in the field of communication network, can solve the problems of resource consumption and active attack, and achieve the effect of less resource consumption and high security

Active Publication Date: 2017-12-01
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

Method used

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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 controller-based quantum repeater network coding scheme, which has three major steps: Step 1. Construct a quantum repeater network model with a controller, and use the EPR pair distribution method to realize the EPR pair distribution between repeater nodes ; Step 2. Based on LOCC communication, introduce a one-time secret communication method with authentication function, provide basic operations of QCon, QRem, QAdd, and QRemAdd, and ensure that communication between any legal node and controller during the encoding process can resist active attacks , to realize secure communication between nodes in the quantum repeater network; Step 3. In the quantum repeater network with a controller, encode the EPR pairs distributed to any adjacent repeater nodes, and use the quantum channel to generate The method generates a quantum entanglement channel from R1 to Rn; the invention has practical value in the field of communication network technology.

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 (CrossingTwo 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 netwo...

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Application Information

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Patent Type & Authority Patents(China)
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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