Accessible coherence and coherence distribution

Teng Ma, Ming-Jing Zhao, Hai-Jun Zhang, Shao-Ming Fei, and Gui-Lu Long

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Submission date: 28. Aug. 2017
Pages: 8
published in: Physical review / A, 95 (2017) 4, art-no. 042328 
DOI number (of the published article): 10.1103/PhysRevA.95.042328
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Abstract:
The definition of accessible coherence is proposed. Through local measurement on the other subsystem and one way classical communication, a subsystem can access more coherence than the coherence of its density matrix. Based on the local accessible coherence, the part that can not be locally accessed is also studied, which we call it remaining coherence. We study how the bipartite coherence is distributed by partition for both l₁ norm coherence and relative entropy coherence, and the expressions for local accessible coherence and remaining coherence are derived. we also study some examples to illustrate the distribution.