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Remote teleportation method based on four-bit Cluster state

A teleportation, four-bit technology, applied in the field of communication network and information dissemination

Inactive Publication Date: 2018-11-27
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0037] In order to solve the problems existing in the prior art, the purpose of the invention of the present invention is to provide a long-distance teleportation method based on the Cluster state to solve the problem of long-distance long-distance quantum communication

Method used

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  • Remote teleportation method based on four-bit Cluster state
  • Remote teleportation method based on four-bit Cluster state
  • Remote teleportation method based on four-bit Cluster state

Examples

Experimental program
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Embodiment 1

[0085] A long-distance teleportation method based on a four-bit Cluster state. Taking an intermediate node as an example, the end user Alice transmits an unknown two-particle state |φ> to another end user Bob. 12 , including the following specific steps:

[0086] Step 1. The communication parties are Alice and Bob. Particle 1 and Particle 2 carry unknown quantum states, which are held by Alice. Alice wants to send the unknown quantum states of the two particles to Bob, the user at the other end of the network. The central server selects an appropriate path and determines the number of intermediate nodes on the path, and establishes the L1 quantum entanglement channel between end users Alice and Bob and the intermediate node. On the transmission path, the end users Alice, Bob and the intermediate node L1 share a four-bit maximum entangled Cluster state with each other, in the following form:

[0087]

[0088] Alice owns the particle Bob owns the particle Intermediate no...

Embodiment 2

[0109] A long-distance teleportation method based on a four-bit Cluster state. Taking an intermediate node as an example, end users Alice and Bob can transmit any single-particle state to each other. The specific steps are as follows:

[0110] Step 1. The communication parties are Alice and Bob, particle 1 and particle 2 carry unknown quantum states, Alice holds particle 1, Bob holds particle 2, Alice and Bob send unknown single-particle states to each other. The central server selects an appropriate path and determines the number of intermediate nodes on the path, and establishes a quantum entanglement channel between end users Alice and Bob and the intermediate node L1. On the transmission path, end users Alice and Bob are interconnected in pairs with the intermediate node L1, sharing a four-bit maximum entangled Cluster state with each other, in the form of:

[0111]

[0112] Alice has an unknown single-particle state |φ 1 > 1 =(a|0>+b|1>) 1 with particles Bob has a...

Embodiment 3

[0130] A long-distance teleportation method based on the four-bit Cluster state. With the help of p intermediate nodes, the end user Alice transmits the unknown two-particle state to another end user Bob. The specific implementation steps of the method are as follows:

[0131] Step 1: If image 3 , Figure 4 As shown, the communication parties are Alice and Bob. Particle 1 and Particle 2 carry unknown quantum states, which are held by Alice. Alice wants to send the unknown quantum states of the two particles to the user Bob at the other end of the network. The central server selects an appropriate path and determines the number p of intermediate nodes on the path, and establishes quantum entanglement channels between end users Alice and Bob and intermediate nodes Li (i=1,2,3,...,p). On the transmission path, end users Alice and Bob are connected to each other in pairs with p intermediate nodes, sharing a four-bit maximum entangled Cluster state with each other, the form is ...

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Abstract

The invention discloses a remote teleportation method based on a four-bit Cluster state. For network terminal users Alice and Bob, through help of an intermediate node, communication between a networkterminal Alice and the other terminal user Bob is completed. The method comprises the four steps that 1, the four-bit most entangled Cluster state is shared by the terminal users Alice, Bob and the intermediate node Li (i=1, 2, 3, ..., p), and a quantum entanglement channel of the terminal users Alice and Bob and the intermediate node Li (i=1, 2, 3, ..., p) is built; 2, modulation and measurementare conducted, wherein CZ operation is conducted on corresponding particles by the terminal user Alice and the intermediate node Li, moreover, Bell measurement is conducted on the particles in handsby the intermediate node, and measurement results are announced; 3, a direct quantum channel between the terminal user Alice / Bob and the other terminal user Bob / Alice is built according to the Bell measurement results of the intermediate node through unitary operation; 4, according to difference of information transferring modes, the terminal users Alice and Bob choose corresponding restoring operation according to the Bell measurement results of each other to achieve intercommunication.

Description

technical field [0001] The invention relates to a communication network and an information dissemination method, in particular to a long-distance teleportation method based on a four-bit Cluster state. Background technique [0002] Quantum communication is a new interdisciplinary subject, which includes a lot of quantum subject knowledge. The main technical research scope is the research of quantum key, quantum transmission, secret sharing technology and quantum security research. In recent years, this science and technology has gradually moved from theoretical research to experimental solutions. People are paying more and more attention to efficient and safe information transmission, and focus on the development of its practicality. Quantum mechanics has a very rigorous basic theory, and it can be combined with communication technology to obtain the characteristics of high efficiency and high security, so it has gradually become the main research hotspot of quantum science ...

Claims

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Application Information

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IPC IPC(8): H04B10/70
CPCH04B10/70
Inventor 姜敏曹凌云李青黄旭陈虹
Owner SUZHOU UNIV
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