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Entanglement Theory Quantum Correlations
Open Quantum Systems Decoherence
Monogamous nature of symmetric N-qubit states of the W-class: Concurrence and Negativity Tangle
arXiv
Authors: P. J. Geetha, K. O. Yashodamma, Sudha
Year
2014
Paper ID
46736
Status
Preprint
Abstract Read
~2 min
Abstract Words
73
Citations
N/A
Abstract
Using Majorana representation of symmetric N-qubit pure states, we have examined the monogamous nature of the family of states with two-distinct spinors, the W-class of states. We have evaluated the N-concurrence tangle and showed that all the states in this family have vanishing concurrence tangle. The negativity tangle for the W-class of states is shown to be non-zero illustrating the fact that concurrence tangle underestimates the residual entanglement in a pure N-qubit state.
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- Using Majorana representation of symmetric N-qubit pure states, we have examined the monogamous nature of the family of states with two-distinct spinors, the W-class of states.
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