Quantum secret sharing affected by vacuum fluctuation

Quantum secret sharing affected by vacuum fluctuation
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受真空波动影响的量子秘密共享

DOI:
10.1007/s11128-019-2209-6
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发表时间:
2019-02
影响因子:
2.5
通讯作者:
Zhiming Huang
Zhiming Huang
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Zhiming Huang

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量子秘密共享协议作为安全多方量子计算的重要协议,在量子密码学中起着至关重要的作用。在真实的世界中,任何量子通信协议都不可避免地受到外部噪声环境的影响。本文研究了无质量标量场真空涨落对准静态系统的影响。我们首先构造了两个匀加速原子与一个具有完全反射平面边界的涨落无质量标量场耦合的噪声模型,然后导出了控制QSS演化的主方程。结果表明,标量场的涨落会降低QSS的性能。此外,我们还分析了加速度、两原子间距和离边界的距离对QSS的影响。结果表明,加速度的增加会削弱QSS的性能,但在反射边界的存在下,QSS的性能可以得到有效的改善。
Quantum secret sharing (QSS) as an important protocol of secure multiparty quantum computation plays a vital role in quantum cryptography. In the real world, any quantum communication protocols are inevitably affected by external noisy environment. In this paper, we investigate the influence of vacuum fluctuation of a massless scalar field on QSS. We firstly construct the noisy model of QSS via two uniformly accelerated atoms coupled with a fluctuating massless scalar field with a perfectly reflecting plane boundary and then derive the master equation that governs the QSS evolution. It is shown that fluctuation of scalar field would lower the performance of QSS. Furthermore, we analyze the impacts of acceleration, two-atom separation and distance from the boundary on the QSS. It is found that increasing acceleration weakens the QSS performance, but in the presence of the reflecting boundary, QSS performance can be improved effectively.
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