dorsal/arxiv
View SchemaDegree of entanglement for two qubits
| Authors | Ayman F. Abouraddy, Bahaa E. A. Saleh, Alexander V. Sergienko, Malvin C. Teich |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0109081 |
| URL | https://arxiv.org/abs/quant-ph/0109081 |
| DOI | 10.1103/PhysRevA.64.050101 |
| Journal | Phys. Rev. A 64, 050101(R) (2001) |
Abstract
We demonstrate that any pure bipartite state of two qubits may be decomposed into a superposition of a maximally entangled state and an orthogonal factorizable one. Although there are many such decompositions, the weights of the two superposed states are, remarkably, unique. We propose a measure of entanglement based on this decomposition. We also demonstrate that this measure is connected to three measures of entanglement previously set forth: maximal violation of Bell's inequality, concurrence, and two-particle visibility.
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"abstract": "We demonstrate that any pure bipartite state of two qubits may be decomposed\ninto a superposition of a maximally entangled state and an orthogonal\nfactorizable one. Although there are many such decompositions, the weights of\nthe two superposed states are, remarkably, unique. We propose a measure of\nentanglement based on this decomposition. We also demonstrate that this measure\nis connected to three measures of entanglement previously set forth: maximal\nviolation of Bell\u0027s inequality, concurrence, and two-particle visibility.",
"arxiv_id": "quant-ph/0109081",
"authors": [
"Ayman F. Abouraddy",
"Bahaa E. A. Saleh",
"Alexander V. Sergienko",
"Malvin C. Teich"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.64.050101",
"journal_ref": "Phys. Rev. A 64, 050101(R) (2001)",
"title": "Degree of entanglement for two qubits",
"url": "https://arxiv.org/abs/quant-ph/0109081"
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