论文标题
基于速度的证人忠实识别的高维系统中的记忆效应
Memory effects in high-dimensional systems faithfully identified by Hilbert-Schmidt speed-based witness
论文作者
论文摘要
最近已经针对低维量子系统引入了基于Hilbert-Schmidt Speed（HSS）的非马克维亚性的见证人。这样的非马克维亚见证人特别有用，很容易计算，因为不需要系统密度矩阵的对角线化。我们研究了基于HSS的证人的敏感性，以检测各种高维和多部分开放量子系统中的非马克维亚性。我们发现，基于HSS的证人的时间行为始终与量子负相关或量子相关度量的时间行为一致。这些结果表明，基于HSS的证人是高维系统量子演变中出现的记忆效应的忠实标识符。
A witness of non-Markovianity based on the Hilbert-Schmidt speed (HSS), a special type of quantum statistical speed, has been recently introduced for low-dimensional quantum systems. Such a non-Markovianity witness is particularly useful, being easily computable since no diagonalization of the system density matrix is required. We investigate the sensitivity of this HSS-based witness to detect non-Markovianity in various high-dimensional and multipartite open quantum systems. We find that the time behaviors of the HSS-based witness are always in agreement with those of quantum negativity or quantum correlation measure. These results show that the HSS-based witness is a faithful identifier of the memory effects appearing in the quantum evolution of a high-dimensional system.
