Bounds for coherence of quantum superpositions in high dimension

Quantum coherence plays a major role in the promotion for quantum information processing and designing quantum technology. Since coherence is rooted in superposition principle, it is vital to understand the coherence change with respect to superpositions. Here we study the bounds for coherence of qu...

Full description

Saved in:
Bibliographic Details
Published in:Scientific reports 2017-06, Vol.7 (1), p.4006-13, Article 4006
Main Authors: Yue, Qiu-Ling, Gao, Fei, Wen, Qiao-Yan, Zhang, Wei-Wei
Format: Article
Language:English
Subjects:
639/766/483/1139
639/766/483/481
Entropy
Humanities and Social Sciences
Information processing
multidisciplinary
Quantum theory
Science
Science (multidisciplinary)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Quantum coherence plays a major role in the promotion for quantum information processing and designing quantum technology. Since coherence is rooted in superposition principle, it is vital to understand the coherence change with respect to superpositions. Here we study the bounds for coherence of quantum superpositions in high dimension. We consider three most frequently used measures of coherence, i.e. the relative entropy of coherence, l 1 norm of coherence and robustness of coherence. For a quantum state (an arbitrary dimension) and its arbitrary decomposition, we give the upper and lower bounds for coherence of the superposition state in terms of the coherence of the states being superposed.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-017-03885-5