Revised Geometric Measure of Entanglement for Multipartite and Continuous Variable Systems

Based on the revised geometric measure of entanglement （RGME） proposed by us [J. Phys. A： Math. Theor. 40 （2007） 3507], we obtain the RGME of multipartite state including three-qubit GHZ state, W state, and the generalized Smolin state （GSS） in the presence of noise and the two-mode squeezed thermal...

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Bibliographic Details
Published inCommunications in theoretical physics Vol. 51; no. 4; pp. 613 - 620
Main Author CAO Ya WANG An-Min
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.04.2009
Subjects
GHZ态
几何测量
双模压缩
热状态
纠缠度
连续变量系统
量子比特
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Summary:Based on the revised geometric measure of entanglement （RGME） proposed by us [J. Phys. A： Math. Theor. 40 （2007） 3507], we obtain the RGME of multipartite state including three-qubit GHZ state, W state, and the generalized Smolin state （GSS） in the presence of noise and the two-mode squeezed thermal state. Moreover, we compare their RGME with geometric measure of entanglement （GME） and relative entropy of entanglement （RE）. The results indicate RGME is an appropriate measure of entanglement. Finally, we define the Gaussian GME which is an entangled monotone.
Bibliography:TB92
O413.1
quantum entanglement, symmetric state, revised geometric measure of entanglement, relative entropy of entanglement
11-2592/O3
ISSN:0253-6102
DOI:10.1088/0253-6102/51/4/08