Year: 2014
Type: article
Abstract: The modeling and analysis of the dynamics of complex systems often requires to employ non-Markovian stochastic processes. While there is a clear and well-established mathematical definition for non-Markovianity in the case of classical systems, the extension to the quantum regime recently caused a vivid debate, leading to many different proposals for the characterization and quantification of memory effects in the dynamics of open quantum systems. Here, we derive a mathematical representation for the non-Markovianity measure based on the exchange of information between the open system and its environment, which reveals the locality and universality of non-Markovianity in the quantum state space and substantially simplifies its numerical and experimental determination. We further illustrate the application of this representation by means of an all-optical experiment which allows the measurement of the degree of memory effects in a photonic quantum process with high accuracy.
Source: Scientific Reports
DOI: 10.1038/srep06327
Authors: B.-H. Liu, S. Wißmann, X.-M. Hu, C. Zhang, Y.-F. Huang, C.-F. Li, G.-C. Guo, A. Karlsson, J. Piilo, H.-P. Breuer
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,341
Funders: Deutscher Akademischer Austauschdienst, National Natural Science Foundation of China, Academy of Finland, Albert-Ludwigs-Universität Freiburg, Magnus Ehrnroothin Säätiö, Studienstiftung des Deutschen Volkes, Jenny ja Antti Wihurin Rahasto, National Key Research and Development Program of China, Fundamental Research Funds for the Central Universities, National Science Fund for Distinguished Young Scholars
OpenAlex ID: W2127470354