论文标题
估计量子随机数的隐私
Estimating the privacy of quantum-random numbers
论文作者
论文摘要
我们分析了攻击者可以通过用户生成的数字获得的信息，该信息通过测量由两个纠缠两级系统组成的系统的子系统的测量值。攻击者和用户仅在其各自的子系统上进行测量。用户子系统的密度矩阵已经完全确定了攻击者可以访问的信息上的上限。我们将此信息与量子状态歧视提供的适当界限进行比较和对比。
We analyze the information an attacker can obtain on the numbers generated by a user by measurements on a subsystem of a system consisting of two entangled two-level systems. The attacker and the user make measurements on their respective subsystems, only. Already the knowledge of the density matrix of the subsystem of the user completely determines the upper bound on the information accessible to the attacker. We compare and contrast this information to the appropriate bounds provided by quantum state discrimination.
