论文标题
开放量子系统中的信息约束
Information constraint in open quantum systems
论文作者
论文摘要
我们提出了一种称为信息约束的效果，其特征是存在不同方向传播的信号强度的不同衰减速率。它是一种开放量子系统的内在特性，不依赖边界条件。我们将信息约束（$ i_c $）的价值定义为不同衰减率的比率，并得出一般二次lindbladian系统的$ I_C $的分析表示。基于信息限制，我们可以对手性和螺旋阻尼的简单而优雅的解释，并获取与数值计算一致的周期边界系统相对粒子数的局部最大值。受信息约束的启发，我们提出并证明了边缘模式和阻尼模式之间的对应关系。构建了一种称为狄拉克阻尼的新型阻尼模式，手性/螺旋阻尼可以被视为狄拉克阻尼的特殊情况。
We propose an effect called information constraint which is characterized by the existence of different decay rates of signal strengths propagating along opposite directions. It is an intrinsic property of a type of open quantum system, which does not rely on boundary conditions. We define the value of information constraint ($I_C$) as the ratio of different decay rates and derive the analytical representation of $I_C$ for general quadratic Lindbladian systems. Based on information constraint, we can provide a simple and elegant explanation of chiral and helical damping, and get the local maximum points of relative particle number for the periodical boundary system, consistent with numerical calculations. Inspired by information constraint, we propose and prove the correspondence between edge modes and damping modes. A new damping mode called Dirac damping is constructed, and chiral/helical damping can be regarded as a special case of Dirac damping.
