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相关实验视频

Updated: Jun 22, 2025

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

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使用半导体单光子源的高速城市间量子密钥分布.

Jingzhong Yang1, Zenghui Jiang1, Frederik Benthin1

  • 1Institut für Festkörperphysik, Leibniz Universität Hannover, Appelstraße 2, 30167, Hannover, Germany.

Light, science & applications
|July 2, 2024
PubMed
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这项研究展示了第一个使用半导体量子点的城市间量子密钥分布 (QKD). 这一安全通信的突破,在79公里的光纤链路上实现了创纪录的关键速率.

科学领域:

  • 量子信息科学 量子信息科学
  • 光电学是指光电子产品.
  • 安全的通信安全的通信

背景情况:

  • 量子密钥分布 (QKD) 提供了信息理论上的防盗安全.
  • 按需量子光源对于提高QKD安全性和性能至关重要.
  • 半导体量子点 (QD) 由于决定性单光子发射,对量子通信具有前景.

研究的目的:

  • 报告第一个城市间QKD实验,利用明亮的,决定性的单光子源.
  • 在现实QKD网络中评估半导体量子点的性能.
  • 通过长光纤链路建立安全密钥生成的新基准.

主要方法:

  • 实现一个带有偏振编码的BB84协议.
  • 在一个圆形的布拉格格结构中利用半导体量子点的单个光子.
  • 通过汉诺威和布朗施威格之间的79公里的城市间光纤连接进行传输.

主要成果:

  • 展示了每脉冲创纪录的最高机密密钥位 (4.8 × 10-5).
  • 实现了大约0.65%的平均量子位误差比率.
  • 确定了28.11dB的非对称最大可容忍损失,相当于144公里的标准光纤.

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相关实验视频

Last Updated: Jun 22, 2025

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

8.4K
Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.0K
Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

14.6K

结论:

  • 确定性半导体量子点源对于最先进的QKD是可行的.
  • 这些来源为改进QKD协议提供了巨大的潜力,包括测量设备独立和量子重复器应用.
  • 这项工作为实用,高性能量子通信网络铺平了道路.