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A location distribution method for distribution nodes of entangled particle pairs in quantum communication

A technology for quantum communication and node distribution, applied in the field of quantum communication and quantum entanglement exchange, can solve problems such as less research on quantum communication networks, and achieve the effect of simple and clear execution process, improved network connectivity, and easy implementation.

Active Publication Date: 2018-12-28
SOUTHEAST UNIV
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Problems solved by technology

There are few studies on quantum communication networks under complex network structures, and the research work is mainly concentrated in the field of network security and quantum state transmission. There is a gap in the research on how to improve network connectivity

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  • A location distribution method for distribution nodes of entangled particle pairs in quantum communication
  • A location distribution method for distribution nodes of entangled particle pairs in quantum communication
  • A location distribution method for distribution nodes of entangled particle pairs in quantum communication

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035] The workflow of the present invention is as figure 1 shown, including the following steps:

[0036] (1) For a network topology graph G containing N quantum communication nodes 0 (V,E 0 ), the number and position of each quantum communication node are known, the distance between any two quantum communication nodes is calculated, and an M*M-dimensional matrix D is generated, D=[D ij ], element D ij Indicates the distance between the i-th quantum communication node and the j-th quantum communication node. According to the distribution range radius R of entangled particles to distribution nodes, find D ij For all connections E less than 2R, regenerate the network topology graph G(V,E);

[0037] (2) Define the location set of entangled particle pair distribution nodes as Q, the set of quantum communication nodes covered by the distribution range of entangled pa...

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Abstract

The invention relates to a position distribution method for entangled particle pair distribution nodes in quantum communication. The method finds out set positions of the entangled particle pair distribution nodes by iteration, and in each round of iteration, executes the following steps of: selecting two quantum communication nodes which are at the longest Euclidean distance from a quantum communication node set uncovered by a distribution range of the entangled particle pair distribution nodes, calculating all shortest paths between two nodes, selecting a plurality of pairs of adjacent quantum communication nodes from each shortest path, presetting the entangled particle pair distribution node at a midpoint of a link between each pair of quantum communication nodes, and calculating a number X of the quantum communication nodes in each path, which are covered by the distribution range of the preset entangled particle pair distribution nodes, and selecting a path with the maximum X value to carry out setting of the entangled particle pair distribution nodes. The iterating process is repeated until all the quantum communication nodes are covered. The position distribution method disclosed by the invention can be used for a network diagram with a random number of quantum communication nodes and a random topological structure, and is simple in execution process.

Description

technical field [0001] The invention relates to quantum communication and quantum entanglement exchange technology, in particular to a position distribution method of entangled particle pair distribution nodes in quantum communication. Background technique [0002] Quantum communication refers to a new type of communication method that uses quantum entanglement effect to transmit information. In order to realize quantum communication, communication terminals need to share entangled particle pairs, relying on quantum measurement technology to extract the quantum state information of the sending end, as long as the quantum state of the sending end particle changes, it will inevitably affect another particle that is in an entangled state with it. Finally, unitary transformation is performed on the quantum state of the receiving end according to the measurement results of the sending end, so as to complete the effective transmission of information. [0003] Compared with classi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/70H04L9/08H04L12/24
CPCH04B10/70H04L9/0852H04L41/12
Inventor 余旭涛邹珍珍张在琛蔡瑞周祥臻
Owner SOUTHEAST UNIV
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