dorsal/arxiv
View SchemaThe entanglement of purification
| Authors | Barbara M. Terhal, Michal Horodecki, Debbie W. Leung, David P. DiVincenzo |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0202044 |
| URL | https://arxiv.org/abs/quant-ph/0202044 |
| DOI | 10.1063/1.1498001 |
| Journal | J. Math. Phys. 43, 4286--4298 (2002) |
Abstract
We introduce a measure of both quantum as well as classical correlations in a quantum state, the entanglement of purification. We show that the (regularized) entanglement of purification is equal to the entanglement cost of creating a state $\rho$ asymptotically from maximally entangled states, with negligible communication. We prove that the classical mutual information and the quantum mutual information divided by two are lower bounds for the regularized entanglement of purification. We present numerical results of the entanglement of purification for Werner states in ${\cal H}_2 \otimes {\cal H}_2$.
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"abstract": "We introduce a measure of both quantum as well as classical correlations in a\nquantum state, the entanglement of purification. We show that the (regularized)\nentanglement of purification is equal to the entanglement cost of creating a\nstate $\\rho$ asymptotically from maximally entangled states, with negligible\ncommunication. We prove that the classical mutual information and the quantum\nmutual information divided by two are lower bounds for the regularized\nentanglement of purification. We present numerical results of the entanglement\nof purification for Werner states in ${\\cal H}_2 \\otimes {\\cal H}_2$.",
"arxiv_id": "quant-ph/0202044",
"authors": [
"Barbara M. Terhal",
"Michal Horodecki",
"Debbie W. Leung",
"David P. DiVincenzo"
],
"categories": [
"quant-ph"
],
"doi": "10.1063/1.1498001",
"journal_ref": "J. Math. Phys. 43, 4286--4298 (2002)",
"title": "The entanglement of purification",
"url": "https://arxiv.org/abs/quant-ph/0202044"
},
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