量子生成的基本速度限制。

Fundamental Speed Limits to the Generation of Quantumness.

机构信息

Institute of Atomic and Molecular Physics and Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, Jilin, China.

Department of Theoretical Physics and History of Science, The University of the Basque Country (EHU/UPV), PO Box 644, 48080 Bilbao, Spain.

出版信息

Sci Rep. 2016 Nov 30;6:38149. doi: 10.1038/srep38149.

DOI:10.1038/srep38149

PMID:27901118

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5128863/

Abstract

Quantum physics dictates fundamental speed limits during time evolution. We present a quantum speed limit governing the generation of nonclassicality and the mutual incompatibility of two states connected by time evolution. This result is used to characterize the timescale required to generate a given amount of quantumness under an arbitrary physical process. The bound is found to be tight under pure dephasing dynamics. More generally, our analysis reveals the dependence on the initial and final states and non-Markovian effects.

摘要

量子物理在时间演化过程中规定了基本的速度限制。我们提出了一个量子速度限制，该限制控制着非经典性的产生以及通过时间演化连接的两个状态之间的相互不兼容性。该结果用于描述在任意物理过程下产生给定数量量子性所需的时间尺度。在纯退相位动力学下，该边界被证明是紧的。更一般地，我们的分析揭示了对初始和最终状态以及非马尔可夫效应的依赖性。