论文标题
没有信任的第三方的公平多党量子通信
Equitable multiparty quantum communication without a trusted third party
论文作者
论文摘要
多党量子通信提供令人愉悦的应用程序，包括量子加密通信和量子秘密共享。基于Greenberg-Horne-Zeilinger（GHz）状态测量的测量设备独立于依赖性（MDI）量子通信提供了实施多方量子通信的实用方法。但是，随着标准的空间局部GHz状态测量，在通信方之间，信息可能会在多派对加密通信中引起重大问题的通信方中存在不平衡。在这里，我们提出了一个公平的多党量子通信，在没有值得信赖的第三方的情况下，可以实现通信方之间的信息平衡。我们的计划基于GHz状态测量，该测量不是在空间上进行定位，而是以对称参与的所有遥远的通信方进行的方式实施。我们还通过介绍使用弱相干脉冲的信息平衡的三方量子通信的原理证明实验证明，验证了我们方案的可行性。
Multiparty quantum communication provides delightful applications including quantum cryptographic communication and quantum secret sharing. Measurement-Device-Independent (MDI) quantum communication based on the Greenberg-Horne-Zeilinger (GHZ) state measurement provides a practical way to implement multiparty quantum communication. With the standard spatially localized GHZ state measurement, however, information can be imbalanced among the communication parties that can cause significant problems in multiparty cryptographic communication. Here, we propose an equitable multiparty quantum communication where information balance among the communication parties is achieved without a trusted third party. Our scheme is based on the GHZ state measurement which is not spatially localized but implemented in a way that all the distant communication parties symmetrically participate. We also verify the feasibility of our scheme by presenting the proof-of-principle experimental demonstration of informationally balanced three-party quantum communication using weak coherent pulses.
