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Converting Coherence to Quantum Correlations

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 22 Apr 2016Embargo end date: 01 Jan 2015 United Kingdom, Singapore, Italy English Publisher:American Physical Society (APS)Journal:Physical Review Letters, volume 116 (issn: 0031-9007, eissn: 1079-7114,

Authors: Jiajun Ma; Jiajun Ma; Benjamin Yadin; Vlatko Vedral; Mile Gu; Davide Girolami;

doi: 10.1103/physrevlett.116.160407 , 10.48550/arxiv.1510.06179

pmid: 27152781

arXiv: http://arxiv.org/abs/1510.06179

handle: 11583/2849539 , 10356/86638 , 10220/44132

Converting Coherence to Quantum Correlations

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Abstract

Recent results in quantum information theory characterize quantum coherence in the context of resource theories. Here we study the relation between quantum coherence and quantum discord, a kind of quantum correlation which appears even in non-entangled states. We prove that the creation of quantum discord with multipartite incoherent operations is bounded by the amount of quantum coherence consumed in its subsystems during the process. We show how the interplay between quantum coherence consumption and creation of quantum discord works in the preparation of multipartite quantum correlated states and in the model of deterministic quantum computation with one qubit.

6 pages, 3 figures

Countries

United Kingdom, Singapore, Italy

Related Organizations

Tsinghua University
China (People's Republic of)
University of Oxford
United Kingdom
University of Oxford
Pakistan
Nanyang Technological University
Singapore
Nationl University of Singapore
Singapore

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Keywords

Quantum Physics, Quantum Correlations, 500, FOS: Physical sciences, Quantum Physics (quant-ph), 530, Quantum Coherence

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