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Quantum correlation exists in any non-product state.

Guo Y, Wu S - Sci Rep (2014)

Bottom Line: Simultaneous existence of correlation in complementary bases is a fundamental feature of quantum correlation, and we show that this characteristic is present in any non-product bipartite state.We propose a measure via mutually unbiased bases to study this feature of quantum correlation, and compare it with other measures of quantum correlation for several families of bipartite states.

View Article: PubMed Central - PubMed

Affiliation: School of Mathematics and Computer Science, Shanxi Datong University, Datong, Shanxi 037009, China.

ABSTRACT
Simultaneous existence of correlation in complementary bases is a fundamental feature of quantum correlation, and we show that this characteristic is present in any non-product bipartite state. We propose a measure via mutually unbiased bases to study this feature of quantum correlation, and compare it with other measures of quantum correlation for several families of bipartite states.

No MeSH data available.


Related in: MedlinePlus

Measures of quantum correlation for the Werner states as functions of α when d = 2 (left) and d = 3 (right).The red curve represents our measure , the green curve represents the quantum discord D and the blue curve represents the entanglement of formation Ef.
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f1: Measures of quantum correlation for the Werner states as functions of α when d = 2 (left) and d = 3 (right).The red curve represents our measure , the green curve represents the quantum discord D and the blue curve represents the entanglement of formation Ef.

Mentions: From the following Theorem and Examples, one knows that there do exist states such that (Example 4) and (Examples 1,2,3). A clear illustration of the difference between and Q2 is also given in Fig. 3. We know that Q2 does not exceed quantum discord D for all the known examples23. However, one can easily find states such that exceeds quantum discord D (See Fig. 3).


Quantum correlation exists in any non-product state.

Guo Y, Wu S - Sci Rep (2014)

Measures of quantum correlation for the Werner states as functions of α when d = 2 (left) and d = 3 (right).The red curve represents our measure , the green curve represents the quantum discord D and the blue curve represents the entanglement of formation Ef.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4248285&req=5

f1: Measures of quantum correlation for the Werner states as functions of α when d = 2 (left) and d = 3 (right).The red curve represents our measure , the green curve represents the quantum discord D and the blue curve represents the entanglement of formation Ef.
Mentions: From the following Theorem and Examples, one knows that there do exist states such that (Example 4) and (Examples 1,2,3). A clear illustration of the difference between and Q2 is also given in Fig. 3. We know that Q2 does not exceed quantum discord D for all the known examples23. However, one can easily find states such that exceeds quantum discord D (See Fig. 3).

Bottom Line: Simultaneous existence of correlation in complementary bases is a fundamental feature of quantum correlation, and we show that this characteristic is present in any non-product bipartite state.We propose a measure via mutually unbiased bases to study this feature of quantum correlation, and compare it with other measures of quantum correlation for several families of bipartite states.

View Article: PubMed Central - PubMed

Affiliation: School of Mathematics and Computer Science, Shanxi Datong University, Datong, Shanxi 037009, China.

ABSTRACT
Simultaneous existence of correlation in complementary bases is a fundamental feature of quantum correlation, and we show that this characteristic is present in any non-product bipartite state. We propose a measure via mutually unbiased bases to study this feature of quantum correlation, and compare it with other measures of quantum correlation for several families of bipartite states.

No MeSH data available.


Related in: MedlinePlus