Generalized concurrences do not provide necessary and sufficient conditions for entanglement detection
Keyword(s):
Rank 2
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We study generalized concurrences as a tool to detect the entanglement of bipartite quantum systems. By considering the case of 2x4 states of rank 2, we prove that generalized concurrences do not, in general, give a necessary and sufficient condition of separability. We identify a set of entangled states which are undetected by this method.
1981 ◽
Vol 91
(1-2)
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pp. 135-145
2015 ◽
Vol 14
(07)
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pp. 1550099
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1980 ◽
Vol 21
(3)
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pp. 321-328
2021 ◽
Vol 25
(2)
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pp. 201-220
2017 ◽
Vol 39
(8)
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pp. 2223-2234
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2015 ◽
Vol 12
(07)
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pp. 1550074
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