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Fundamentals of Quantum Communication through Atmospheric Channels

通过大气通道进行量子通信的基础知识

基本信息

批准号：
260693902
负责人：
Professor Dr. Werner Vogel
金额：
--
依托单位：
Institute of Physics
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2014
资助国家：
德国
起止时间：
2013-12-31 至 2018-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/260693902?language=en
关键词：
Fundamentals Quantum Communication through Atmospheric

项目摘要

The main purpose of the proposed project prolongation is to accomplish the theoretical understanding of the "Fundamentals of Quantum Communication through Atmospheric Channels", based on the knowledge gained during the first period of the project. This task requires a general theoretical description of atmospheric quantum channels for different turbulence conditions and various communication scenarios, which will include a close cooperation with experimental groups. In this connection we plan to model the intracity atmospheric quantum channels with moderate-to-strong turbulence. Furthermore, we intend to describe the vertical and elevated propagation paths in inhomogeneous strong turbulence. Such paths are crucial for the description of the satellite-mediated quantum communication and allows one to accomplish global quantum communication networks. In order to establish optimized communication protocols we consider the temporal characteristics of the atmospheric channels. This will give us the possibility to post-select the optical signal, which is transmitted during the most favorable time intervals, when the atmosphere has a high transmittance. The exploitation of advantages of atmospheric channels ensures a high-fidelity transfer of quantum properties of light, such as squeezing, entanglement, and others. This shall pave the way to establish global free-space quantum communication networks.

拟议项目延期的主要目的是在项目第一阶段所获得的知识的基础上，从理论上理解“大气通道量子通信的基本原理”。这项任务需要对不同湍流条件和各种通信场景下的大气量子信道进行一般的理论描述，这将包括与实验小组的密切合作。在这方面，我们计划对具有中到强湍流的星际大气量子通道进行建模。此外，我们还打算描述非均匀强湍流中的垂直传播路径和提升传播路径。这样的路径对于描述卫星量子通信是至关重要的，并允许人们完成全球量子通信网络。为了建立优化的通信协议，我们考虑了大气信道的时间特性。这将使我们有可能在大气具有高透射率时，对在最有利的时间间隔期间发射的光信号进行后选择。利用大气信道的优势，确保了光的量子性质的高保真传输，如压缩、纠缠等。这将为建立全球自由空间量子通信网络铺平道路。