Coherence Trade-off relations in Multipartite systems

International Conference on the Frontiers in Atomic, Molecular, and Optical Physics 2016

Radhakrishnan, Chandrashekar^1,2 ; Parthasarathy, Manikandan^3 ; Jambulingam, Segar^3 ; Byrnes, Tim^1,2,4,5

New York University, 1555 Century Avenue, Pudong, Shanghai

200122, China^1

NYU-ECNU Institute of Physics at NYU Shanghai, 3663 Zhongshan Road North, Shanghai

200062, China^2

Department of Physics, Ramakrishna Mission Vivekananda College, Mylapore, Chennai

600004, India^3

Department of Physics, New York University, NY

10002, United States^4

National Institute of Informatics, 2-1-2 Hitotsubashi, Chiyoda-ku, Tokyo

101-8430, Japan^5

关键词: Distribution property;    Intrinsic contribution;    Metric properties;    Multipartite systems;    Quantum coherence;    Quantum state;    Spin chain models;    Trade off;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/752/1/012003/pdf
DOI  :  10.1088/1742-6596/752/1/012003

来源: IOP

【 摘 要 】

Quantum coherence is investigated using a new measure with metric properties and entropic nature and decomposed into local and intrinsic contributions. The trade-off relation between these contributions as well as their distribution properties are studied for simple tripartite systems and the more complex spin chain model. We find that the coherence changes its nature with respect to the parameters of the quantum state under investigation.