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Entanglement Theory Quantum Correlations
Reexamination of determinant-based separability test for two qubits
arXiv
Authors: Maciej Demianowicz
Year
2010
Paper ID
11020
Status
Preprint
Abstract Read
~2 min
Abstract Words
102
Citations
N/A
Abstract
It was shown in \[Augusiak et al.,\;Phys. Rev. A 77, 030301(R) (2008)\] that discrimination between entanglement and separability in a two qubit state can be achieved by a measurement of a single observable on four copies of it. Moreover, a pseudo entanglement monotone π was proposed to quantify entanglement in such states. The main goal of the present paper is to show that close relationship between π and concurrence reported there is a result of sharing the same underlying construction of a spin flipped matrix. We also show that monogamy of entanglement can be rephrased in terms of π and prove the factorization law for π.
Why This Paper Matters
- This paper contributes to the Entanglement Theory & Quantum Correlations research area in the Quantum Articles archive.
- It adds a 2010 reference point for readers tracking recent quantum research.
- It was shown in [Augusiak et al.,;Phys.
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