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Three-level multi-user quantum signaling transmission method based on entanglement swapping

An entanglement exchange and multi-user technology, applied in the field of quantum communication and quantum information, can solve problems such as impossible communication tasks

Inactive Publication Date: 2012-01-18
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it can be said that a communication network without signaling, or a network with an abnormal signaling system, is impossible to complete the communication task

Method used

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  • Three-level multi-user quantum signaling transmission method based on entanglement swapping
  • Three-level multi-user quantum signaling transmission method based on entanglement swapping
  • Three-level multi-user quantum signaling transmission method based on entanglement swapping

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] figure 1 It is a three-level multi-user quantum signaling transmission network structure, including the QSCS at the center as the quantum signaling central switch, the QSS surrounding the QSCS as the primary quantum signaling switch, and each user in the quantum communication network.

[0016] exist figure 1 Among them, the QSCS located in the center is the quantum signaling central switch (QSCS: Quantum Signaling Center Switcher), and the QSCS is at the highest level of the signaling transmission network, that is, the third-level signaling point; the QSS around the QSCS is the primary quantum signaling center switch. Quantum Signaling Switcher (QSS: Quantum Signaling Switcher), QSS is in the intermediate level of the signaling transmission network, that is, the second-level signaling point; A1, A2, B1, B2, etc. are each user in the quantum communication network, and each user is in the signaling The lowest level of the transmission network, that is, the first level si...

Embodiment 2

[0022] This embodiment provides definitions, expressions and transmission methods of various quantum signaling in a three-level multi-user quantum communication network.

[0023] to combine figure 1 ,details as follows:

[0024] Different quantum signaling generated by user A1 is represented by different quantum states. The classification, function and transmission method of these quantum signaling are as follows:

[0025] (1) Request signaling for quantum communication

[0026] The quantum communication request signaling is sent by the calling user A1, through the quantum state express. A1 will Send to QSS1; when QSS1 receives the quantum state sent by A1 , change the state of A1 from the idle state to the working state. quantum state It can be expressed as:

[0027]

[0028] Where |H> represents the horizontal polarization state of the quantum, |V> represents the vertical polarization state of the quantum, α and β are coefficients, and they satisfy the follow...

Embodiment 3

[0042] This embodiment provides a method for completing the transmission of the above five kinds of quantum signaling through quantum entanglement exchange.

[0043] In the above-mentioned quantum signaling transmission process between A1 and B2, whether it is between A1 and QSS1, or between QSS1 and QSCS and QSS4, the quantum signaling transmission is completed through quantum entanglement exchange.

[0044] figure 2 The entanglement exchange process of quantum signaling is given. exist figure 2 In , there are two EPR entanglement sources, namely EPR-Source-1 and EPR-Source-2. Particles 1 and 4 are a pair of entangled particles produced by EPR-Source-1; particles 2 and 3 are another pair of entangled particles produced by EPR-Source-2. Different particle states represent different quantum signaling. The entanglement exchange of the quantum states of particles 1, 2, 3 and 4 can be realized by performing Bell State Measurement on particles 1 and 2. That is, the transmiss...

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Abstract

The invention discloses a three-level multi-user quantum signaling transmission method based on entanglement swapping. A primary quantum signaling swapper corresponding to a calling subscriber is provided with an electron paramagnetic resonance (EPR) entanglement source used for generating two entanglement particles (1) and (4), wherein the entanglement particle (4) is sent to the calling subscriber and the entanglement particle (1) is sent to a quantum signaling centrex; a primary quantum signaling swapper corresponding to a called subscriber is also provided with an EPR entanglement source used for generating two entanglement particles (2) and (3); the entanglement particle (3) is sent to the called subscriber and the entanglement particle (2) is sent to the quantum signaling centrex; different particle states of two entanglement particles represent different types of quantum signaling; and in the quantum signaling centrex, quantum signaling swapping between the called subscriber and the calling subscriber is finished through Bell state measurement performed by the entanglement particles (2) and (1).

Description

technical field [0001] The invention relates to the fields of quantum communication and quantum information, in particular, a three-level multi-user quantum signaling transmission method based on entanglement exchange. Background technique [0002] Signaling is an essential and important part of any communication system, and quantum communication is no exception. Three-level quantum signaling transmission is the key technology to realize multi-user quantum communication. However, the research on quantum signaling has not yet started, and the three-level quantum signaling transmission method is a blank in this field. [0003] In a multi-user communication system, signaling refers to a collection of a series of signal architectures and protocols that meet certain standards. Signaling must be generic. In order to complete communication tasks, various software and hardware in the network (such as communication terminals, switches, modems, routers, gateways, and various comput...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04B10/30H04B10/70
Inventor 聂帅裴昌幸易运晖聂敏刘晓慧何先灯陈南董如月武玫
Owner XIDIAN UNIV
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