scholarly journals Geometric measure of entanglement and shared quantum states

2008 ◽  
Vol 78 (3) ◽  
Author(s):  
Levon Tamaryan ◽  
DaeKil Park ◽  
Jin-Woo Son ◽  
Sayatnova Tamaryan
Keyword(s):  
Quantum States ◽  
Geometric Measure ◽  
Geometric Measure Of Entanglement

scholarly journals Generalized geometric measure of entanglement for multiparty mixed states

2016 ◽  
Vol 94 (2) ◽  
Author(s):  
Tamoghna Das ◽  
Sudipto Singha Roy ◽  
Shrobona Bagchi ◽  
Avijit Misra ◽  
Aditi Sen(De) ◽  
...  
Keyword(s):  
Mixed States ◽  
Geometric Measure ◽  
Geometric Measure Of Entanglement

scholarly journals The geometric measure of entanglement for a symmetric pure state with non-negative amplitudes

2009 ◽  
Vol 50 (12) ◽  
pp. 122104 ◽  
Author(s):  
Masahito Hayashi ◽  
Damian Markham ◽  
Mio Murao ◽  
Masaki Owari ◽  
Shashank Virmani
Keyword(s):  
Pure State ◽  
Geometric Measure ◽  
Geometric Measure Of Entanglement

Connections between relative entropy of entanglement and geometric measure of entanglement

2004 ◽  
Vol 4 (4) ◽  
pp. 252-272
Author(s):  
T.-C. Wei ◽  
M. Ericsson ◽  
P.M. Goldbart ◽  
W.J. Munro
Keyword(s):  
Lower Bound ◽  
Relative Entropy ◽  
Upper Bounds ◽  
Mixed States ◽  
Geometric Measure ◽  
Entanglement Of Formation ◽  
Entanglement Measures ◽  
Pure States ◽  
Relative Entropy Of Entanglement ◽  
Geometric Measure Of Entanglement

As two of the most important entanglement measures---the entanglement of formation and the entanglement of distillation---have so far been limited to bipartite settings, the study of other entanglement measures for multipartite systems appears necessary. Here, connections between two other entanglement measures---the relative entropy of entanglement and the geometric measure of entanglement---are investigated. It is found that for arbitrary pure states the latter gives rise to a lower bound on the former. For certain pure states, some bipartite and some multipartite, this lower bound is saturated, and thus their relative entropy of entanglement can be found analytically in terms of their known geometric measure of entanglement. For certain mixed states, upper bounds on the relative entropy of entanglement are also established. Numerical evidence strongly suggests that these upper bounds are tight, i.e., they are actually the relative entropy of entanglement.

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