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Coherence of assistance and regularized coherence of assistance

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 27 Dec 2017Embargo end date: 01 Jan 2017Publisher:American Physical Society (APS)Journal:Physical Review A, volume 96 (issn: 2469-9926, eissn: 2469-9934,

Authors: Teng Ma; Ming-Jing Zhao; Shao-Ming Fei; Shao-Ming Fei;

doi: 10.1103/physreva.96.062332 , 10.48550/arxiv.1712.09768

arXiv: http://arxiv.org/abs/1712.09768

Coherence of assistance and regularized coherence of assistance

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Abstract

We study the relation between the coherence of assistance and the regularized coherence of assistance introduced by Chitambar et al. [E. Chitambar et al., Phys. Rev. Lett. 116, 070402 (2016)]. The necessary and sufficient conditions that these two quantities coincide are provided. Detailed examples are analyzed and the optimal pure state decompositions such that the coherence of assistance equals the regularized coherence of assistance are derived. Moreover, we present the protocol for obtaining the maximal relative entropy coherence, assisted by another party under local measurement and one-way communication in one copy setting.

Related Organizations

Max Planck Society
Germany
Max Planck Institute for Mathematics in the Sciences
Germany
Tsinghua University
China (People's Republic of)
Beijing Information Science & Technology University
China (People's Republic of)
Capital Normal University
China (People's Republic of)

Keywords

Quantum Physics, FOS: Physical sciences, Quantum Physics (quant-ph)

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