arXiv:1404.4912

The relation between tangle and local unitary invariants for pure three and four-qubit states

Xin-Wei Zha, Yunguang Zhang, Jianxia Qi, Haiyang Song

Published Apr 19, 2014• 0 citations

Abstract

A new form of local unitary (LU) transformation invariant is given for multi-qubit states . The general relation between tangle and the LU transformation invariant of pure three and four-qubit states is given. We find that the tangle actually is a special LU transformation invariant. Furthermore, the tangle is a important local unitary (LU) transformation invariant which is a nessesary condition for maximally multi-qubit entangled state.

DOI: 10.48550/arxiv.1404.4912

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