Unified view of quantum correlations and quantum coherence

Kok Chuan Tan, Hyukjoon Kwon, Chae-Yeun Park, and Hyunseok Jeong
Phys. Rev. A 94, 022329 – Published 24 August 2016; Erratum Phys. Rev. A 96, 069905 (2017)

Abstract

In this paper, we argue that quantum coherence in a bipartite system can be contained either locally or in the correlations between the subsystems. The portion of quantum coherence contained within correlations can be viewed as a kind of quantum correlation which we call correlated coherence. We demonstrate that the framework provided by correlated coherence allows us to retrieve the same concepts of quantum correlations as defined by the asymmetric and symmetric versions of quantum discord as well as quantum entanglement, providing a unified view of these correlations. We also prove that correlated coherence can be formulated as an entanglement monotone, thus demonstrating that entanglement may be viewed as a specialized form of coherence.

  • Received 18 March 2016

DOI:https://doi.org/10.1103/PhysRevA.94.022329

©2016 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & TechnologyGeneral Physics

Erratum

Erratum: Unified view of quantum correlations and quantum coherence [Phys. Rev. A 94, 022329 (2016)]

Kok Chuan Tan, Hyukjoon Kwon, Chae-Yeun Park, and Hyunseok Jeong
Phys. Rev. A 96, 069905 (2017)

Authors & Affiliations

Kok Chuan Tan*, Hyukjoon Kwon, Chae-Yeun Park, and Hyunseok Jeong

  • Center for Macroscopic Quantum Control, Department of Physics and Astronomy, Seoul National University, Seoul 151-742, Korea

  • *bbtankc@gmail.com
  • h.jeong37@gmail.com

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Issue

Vol. 94, Iss. 2 — August 2016

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