Computable measure of total quantum correlations of multipartite systems

Computable measure of total quantum correlations of multipartite systems Quantum discord as a measure of the quantum correlations cannot be easily computed for most of density operators. In this paper, we present a measure of the total quantum correlations that is operationally simple and can be computed effectively for an arbitrary mixed state of a multipartite system. The measure is based on the coherence vector of the party whose quantumness is investigated as well as the correlation matrix of this part with the remainder of the system. Being able to detect the quantumness of multipartite systems, such as detecting the quantum critical points in spin chains, alongside with the computability characteristic of the measure, makes it a useful indicator to be exploited in the cases which are out of the scope of the other known measures. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Computable measure of total quantum correlations of multipartite systems

Loading next page...
 
/lp/springer_journal/computable-measure-of-total-quantum-correlations-of-multipartite-wM3zCCB3Ye
Publisher
Springer US
Copyright
Copyright © 2015 by Springer Science+Business Media New York
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-015-1224-5
Publisher site
See Article on Publisher Site

Abstract

Quantum discord as a measure of the quantum correlations cannot be easily computed for most of density operators. In this paper, we present a measure of the total quantum correlations that is operationally simple and can be computed effectively for an arbitrary mixed state of a multipartite system. The measure is based on the coherence vector of the party whose quantumness is investigated as well as the correlation matrix of this part with the remainder of the system. Being able to detect the quantumness of multipartite systems, such as detecting the quantum critical points in spin chains, alongside with the computability characteristic of the measure, makes it a useful indicator to be exploited in the cases which are out of the scope of the other known measures.

Journal

Quantum Information ProcessingSpringer Journals

Published: Jan 12, 2016

References

  • Can quantum-mechanical description of physical reality be considered complete?
    Einstein, A; Podolsky, B; Rosen, N
  • Quantifying entanglement
    Vedral, V; Plenio, MB; Rippin, MA; Knight, PL
  • Information theory of quantum entanglement and measurement
    Cerf, NJ; Adami, C
  • Quantum entanglement
    Horodecki, R; Horodecki, P; Horodecki, M; Horodecki, K
  • Monogamy deficit for quantum correlations in a multipartite quantum system
    Liu, SY; Li, B; Yang, WL; Fan, H
  • Analytical expressions of global quantum discord for two classes of multi-qubit states
    Xu, J
  • Geometric measure of quantum discord
    Luo, S; Fu, S
  • Computable measure of the quantum correlation
    Akhtarshenas, SJ; Mohammadi, H; Karimi, S; Azmi, Z
  • Geometric quantum discord through the Schatten 1-norm
    Paula, FM; Oliveira, TR; Sarandy, MS
  • Remedying the local ancilla problem with geometric discord
    Chang, L; Luo, S
  • Sudden change of quantum discord for a system of two qubits
    Pinto, JPG; Karpat, G; Fanchini, FF

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off