dorsal/arxiv
View SchemaMixed State Entanglement: Manipulating Polarisation-Entangled Photons
| Authors | R. T. Thew, W. J. Munro |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0103005 |
| URL | https://arxiv.org/abs/quant-ph/0103005 |
| DOI | 10.1103/PhysRevA.64.022320 |
| Journal | Phys. Rev. A 64, 022320 (2001) |
Abstract
There has been much discussion recently regarding entanglement transformations in terms of local filtering operations and whether the optimal entanglement for an arbitrary two-qubit state could be realised. We introduce an experimentally realisable scheme for manipulating the entanglement of an arbitrary state of two polarisation entangled qubits. This scheme is then used to provide some perspective to the mathematical concepts inherent in this field with respect to a laboratory environment. Specifically, we look at how to extract enhanced entanglement from systems with a fixed rank and in the case where the rank of the density operator for the state can be reduced, show how the state can be made arbitrarily close to a maximally entangled pure state. In this context we also discuss bounds on entanglement in mixed states.
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"abstract": "There has been much discussion recently regarding entanglement\ntransformations in terms of local filtering operations and whether the optimal\nentanglement for an arbitrary two-qubit state could be realised. We introduce\nan experimentally realisable scheme for manipulating the entanglement of an\narbitrary state of two polarisation entangled qubits. This scheme is then used\nto provide some perspective to the mathematical concepts inherent in this field\nwith respect to a laboratory environment. Specifically, we look at how to\nextract enhanced entanglement from systems with a fixed rank and in the case\nwhere the rank of the density operator for the state can be reduced, show how\nthe state can be made arbitrarily close to a maximally entangled pure state. In\nthis context we also discuss bounds on entanglement in mixed states.",
"arxiv_id": "quant-ph/0103005",
"authors": [
"R. T. Thew",
"W. J. Munro"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.64.022320",
"journal_ref": "Phys. Rev. A 64, 022320 (2001)",
"title": "Mixed State Entanglement: Manipulating Polarisation-Entangled Photons",
"url": "https://arxiv.org/abs/quant-ph/0103005"
},
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