论文标题
量子3转换的信息传输的多重行为
Multifold behavior of the information transmission by the quantum 3-switch
论文作者
论文摘要
我们通过三个量子通道在因果命令的叠加中揭示了信息传播的新行为。我们发现，随着噪声水平的变化，传输可以表现出三种不同的行为。这种多重行为可以通过与因果顺序的特定组合相关的量子开关矩阵的不同等效类别来解释。我们使用它们的特征多项式和基质不变性对这些矩阵进行分类，并在三种代表性情况下计算孔波信息的分析表达式。我们的结果是了解和利用不同噪声水平的因果订单的量子控制的一步。我们还研究了孔波信息作为连续阶参数的函数，并在整数值下分析过渡。
We uncover new behaviors of the transmission of information by three quantum channels in superposition of causal orders subject to some level of noise. We find that the transmission can exhibit three different behaviors as the level of noise is varied. This multifold behavior can be explained by the different equivalence classes of quantum switch matrices related to specific combinations of causal orders. We classify these matrices using their characteristic polynomials and matrix invariants, and we calculate analytical expressions for the Holevo information in three representative cases. Our results are a step forward to understand and harness quantum control of causal orders with different levels of noise. We also study the Holevo information as function of a continuous order parameter and analyse transitions at integer values.
