dorsal/arxiv
View SchemaGeometric measure of entanglement for multipartite quantum states
| Authors | Tzu-Chieh Wei, Paul M. Goldbart |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0212030 |
| URL | https://arxiv.org/abs/quant-ph/0212030 |
| Journal | PHYS REV A 68 (4): Art. No. 042307 OCT 2003 |
Abstract
The degree to which a pure quantum state is entangled can be characterized by the distance or angle to the nearest unentangled state. This geometric measure of entanglement, already present in a number of settings [A. Shimony, Ann. NY. Acad. Sci. 755, p.675 (1995) and H. Barnum and N. Linden, J. Phys. A: Math. Gen. 34, p.6787 (2001)], is explored for bipartite and multipartite pure and mixed states. It is determined for arbitrary two-qubit mixed states and for generalized Werner and isotropic states, and is also applied to certain multipartite mixed states.
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"abstract": "The degree to which a pure quantum state is entangled can be characterized by\nthe distance or angle to the nearest unentangled state. This geometric measure\nof entanglement, already present in a number of settings [A. Shimony, Ann. NY.\nAcad. Sci. 755, p.675 (1995) and H. Barnum and N. Linden, J. Phys. A: Math.\nGen. 34, p.6787 (2001)], is explored for bipartite and multipartite pure and\nmixed states. It is determined for arbitrary two-qubit mixed states and for\ngeneralized Werner and isotropic states, and is also applied to certain\nmultipartite mixed states.",
"arxiv_id": "quant-ph/0212030",
"authors": [
"Tzu-Chieh Wei",
"Paul M. Goldbart"
],
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"quant-ph"
],
"journal_ref": "PHYS REV A 68 (4): Art. No. 042307 OCT 2003",
"title": "Geometric measure of entanglement for multipartite quantum states",
"url": "https://arxiv.org/abs/quant-ph/0212030"
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