基于量子开关的量子纠缠分发基本限制突破

许瑞青; 周日贵; 李尧翀

doi:10.11959/j.issn.1000-436x.2024177

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基于量子开关的量子纠缠分发基本限制突破

学术论文 | 更新时间：2024-11-14

- 基于量子开关的量子纠缠分发基本限制突破
- Breaking fundamental limits of quantum entanglement distribution with quantum switch
- 通信学报 2024年45卷第10期页码：69-80
- 作者机构：
  
  1.上海海事大学信息工程学院，上海 201306
  2.上海海事大学智能信息处理与量子智能计算研究中心，上海 201306
- 作者简介：
  
  [ "许瑞青（1995- ），女，江苏南通人，上海海事大学博士生，主要研究方向为量子信息理论、量子通信网络、量子通信协议设计。" ]
  [ "周日贵（1973- ），男，江西高安人，博士，上海海事大学教授、博士生导师，主要研究方向为智能信息处理、量子计算。" ]
  [ "李尧翀（1996- ），男，江西南昌人，博士，上海海事大学讲师，主要研究方向为量子机器学习、量子优化。" ]
- 基金信息：
  
  国家自然科学基金资助项目(62172268;62302289);上海市科技基金资助项目(21JC1402800;23YF1416200)
- DOI：10.11959/j.issn.1000-436x.2024177
  中图分类号： TN911
- 收稿日期：2024-04-07，
  
  修回日期：2024-09-14，
  
  纸质出版日期：2024-10-25
- 稿件说明：
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许瑞青,周日贵,李尧翀.基于量子开关的量子纠缠分发基本限制突破[J].通信学报,2024,45(10):69-80.

XU Ruiqing,ZHOU Rigui,LI Yaochong.Breaking fundamental limits of quantum entanglement distribution with quantum switch[J].Journal on Communications,2024,45(10):69-80.
许瑞青,周日贵,李尧翀.基于量子开关的量子纠缠分发基本限制突破[J].通信学报,2024,45(10):69-80. DOI： 10.11959/j.issn.1000-436x.2024177.

XU Ruiqing,ZHOU Rigui,LI Yaochong.Breaking fundamental limits of quantum entanglement distribution with quantum switch[J].Journal on Communications,2024,45(10):69-80. DOI： 10.11959/j.issn.1000-436x.2024177.

摘要

为解决纠缠分发中量子信息在信道中传输极易出现信息丢失导致纠缠分发速率低的问题，提出利用量子开关传输量子信息。针对量子开关的信息传输能力，设计基于量子开关的自适应纠缠分发协议，确定基于量子开关的两步纠缠分发容量；利用信道的量子隐形传态模拟方法推导出容量上界，并利用哈希不等式推导出容量下界。仿真结果表明，所提方法的容量下界基本上突破了传统量子信道的容量上界，为实现量子信息的高速率传输提供了可行思路。

Abstract

To solve the problem of low efficiency of entanglement distribution caused by quantum information easily lost in quantum channels

quantum switch was proposed to transmit quantum information. Considering the information transmission capacity of quantum switch

an adaptive entanglement distribution protocol with quantum switch was proposed and two-way entanglement distribution capacity with quantum switch was correspondingly derived. Then the tighter upper bound of channel capacity was derived by using teleportation simulation of quantum channel

the tighter lower bound was derived on the basis of Hash inequality. Simulation result shows that the lower bound of channel capacity in the proposed method generally surpasses the upper bound of which in the traditional quantum channel

providing a feasible thought for delivering high-rate quantum information.

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references

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