dorsal/arxiv
View SchemaDynamics of tripartite entanglement
| Authors | S. Shelly Sharma, N. K. Sharma |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0502008 |
| URL | https://arxiv.org/abs/quant-ph/0502008 |
| DOI | 10.1238/Physica.Topical.118a00272 |
| Journal | Physica Scripta, T118, 272 - 275, (2005). |
Abstract
Maximally entangled states are of utmost importance to quantum communication, dense coding, and quantum teleportation. With a trapped ion placed inside a high finesse optical cavity, interacting with field of an external laser and quantized cavity field, a scheme to generate a maximally entangled three qubit GHZ state, is proposed. The dynamics of tripartite entanglement is investigated, using negativity as an entanglement measure and linear entropy as a measure of mixedness of a state. It is found that (a) the number of modes available to the subsystem determines the maximum entanglement of a subsystem, b) at entanglement maxima and minima, linear entropy and negativity uniquely determine the nature of state, but the two measures do not induce the same ordering of states, and c) for a special choice of system parameters maximally entangled tripartite two mode GHZ state is generated. The scheme presented for GHZ state generation is a single step process and is reduction free. PACS: 03.67.-a, 42.50.-p, 03.67.Dd
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"abstract": "Maximally entangled states are of utmost importance to quantum communication,\ndense coding, and quantum teleportation. With a trapped ion placed inside a\nhigh finesse optical cavity, interacting with field of an external laser and\nquantized cavity field, a scheme to generate a maximally entangled three qubit\nGHZ state, is proposed. The dynamics of tripartite entanglement is\ninvestigated, using negativity as an entanglement measure and linear entropy as\na measure of mixedness of a state. It is found that (a) the number of modes\navailable to the subsystem determines the maximum entanglement of a subsystem,\nb) at entanglement maxima and minima, linear entropy and negativity uniquely\ndetermine the nature of state, but the two measures do not induce the same\nordering of states, and c) for a special choice of system parameters maximally\nentangled tripartite two mode GHZ state is generated. The scheme presented for\nGHZ state generation is a single step process and is reduction free.\n PACS: 03.67.-a, 42.50.-p, 03.67.Dd",
"arxiv_id": "quant-ph/0502008",
"authors": [
"S. Shelly Sharma",
"N. K. Sharma"
],
"categories": [
"quant-ph"
],
"doi": "10.1238/Physica.Topical.118a00272",
"journal_ref": "Physica Scripta, T118, 272 - 275, (2005).",
"title": "Dynamics of tripartite entanglement",
"url": "https://arxiv.org/abs/quant-ph/0502008"
},
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