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Author:

Hu, Ming-Liang (Hu, Ming-Liang.) | Fan, Heng (Fan, Heng.) | Tian, Dong-Ping (Tian, Dong-Ping.)

Indexed by:

SCIE Scopus

Abstract:

The information-theoretic definition of quantum correlation, e.g., quantum discord, is measurement dependent. By considering the more general quantum measurements, weak measurements, which include the projective measurement as a limiting case, we show that while weak measurements can enable one to capture more quantumness of correlation in a state, it can also induce other counterintuitive quantum effects. Specifically, we show that the general measurements with different strengths can impose different orderings for quantum correlations of some states. It can also modify the monogamous character for certain classes of states as well which may diminish the usefulness of quantum correlation as a resource in some protocols. In this sense, we say that the weak measurements play a dual role in defining quantum correlation.

Keyword:

Monogamy Quantum discord Weak measurement

Author Community:

  • [ 1 ] [Hu, Ming-Liang; Tian, Dong-Ping] Xi An Jiao Tong Univ, Sch Sci, Xian 710049, Peoples R China
  • [ 2 ] [Hu, Ming-Liang] Xian Univ Posts & Telecommun, Sch Sci, Xian 710121, Peoples R China
  • [ 3 ] [Fan, Heng] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China
  • [ 4 ] [Hu, Ming-Liang]Xi An Jiao Tong Univ, Sch Sci, Xian 710049, Peoples R China
  • [ 5 ] [Tian, Dong-Ping]Xi An Jiao Tong Univ, Sch Sci, Xian 710049, Peoples R China
  • [ 6 ] [Hu, Ming-Liang]Xian Univ Posts & Telecommun, Sch Sci, Xian 710121, Peoples R China
  • [ 7 ] [Fan, Heng]Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China

Reprint Author's Address:

  • Xi An Jiao Tong Univ, Sch Sci, Xian 710049, Peoples R China.

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Source :

INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS

ISSN: 0020-7748

Year: 2015

Issue: 1

Volume: 54

Page: 62-71

1 . 0 4 1

JCR@2015

1 . 7 0 8

JCR@2020

ESI Discipline: PHYSICS;

ESI HC Threshold:157

JCR Journal Grade:4

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count: 6

SCOPUS Cited Count: 7

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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