dorsal/arxiv
View SchemaScalable multi-particle entanglement of trapped ions
| Authors | H. Haeffner, W. Haensel, C. F. Roos, J. Benhelm, D. Chek-al-kar, M. Chwalla, T. Koerber, U. D. Rapol, M. Riebe, P. O. Schmidt, C. Becher, O. Gühne, W. Dür, R. Blatt |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0603217 |
| URL | https://arxiv.org/abs/quant-ph/0603217 |
| DOI | 10.1038/nature04279 |
| Journal | Nature 438, 643-646 (2005) |
Abstract
Among the various kinds of entangled states, the 'W state' plays an important role as its entanglement is maximally persistent and robust even under particle loss. Such states are central as a resource in quantum information processing and multiparty quantum communication. Here we report the scalable and deterministic generation of four-, five-, six-, seven- and eight-particle entangled states of the W type with trapped ions. We obtain the maximum possible information on these states by performing full characterization via state tomography, using individual control and detection of the ions. A detailed analysis proves that the entanglement is genuine. The availability of such multiparticle entangled states, together with full information in the form of their density matrices, creates a test-bed for theoretical studies of multiparticle entanglement. Independently, -Greenberger-Horne-Zeilinger- entangled states with up to six ions have been created and analysed in Boulder.
{
"annotation_id": "ad5aee57-431b-4271-a6d0-139746921efb",
"date_created": "2026-03-02T18:02:26.467000Z",
"date_modified": "2026-03-02T18:02:26.467000Z",
"file_hash": "0b86a31f9583a80d66430b2609488eabae7ff254565d9d58718d4a5d756a308c",
"private": false,
"record": {
"abstract": "Among the various kinds of entangled states, the \u0027W state\u0027 plays an important\nrole as its entanglement is maximally persistent and robust even under particle\nloss. Such states are central as a resource in quantum information processing\nand multiparty quantum communication. Here we report the scalable and\ndeterministic generation of four-, five-, six-, seven- and eight-particle\nentangled states of the W type with trapped ions. We obtain the maximum\npossible information on these states by performing full characterization via\nstate tomography, using individual control and detection of the ions. A\ndetailed analysis proves that the entanglement is genuine. The availability of\nsuch multiparticle entangled states, together with full information in the form\nof their density matrices, creates a test-bed for theoretical studies of\nmultiparticle entanglement. Independently, -Greenberger-Horne-Zeilinger-\nentangled states with up to six ions have been created and analysed in Boulder.",
"arxiv_id": "quant-ph/0603217",
"authors": [
"H. Haeffner",
"W. Haensel",
"C. F. Roos",
"J. Benhelm",
"D. Chek-al-kar",
"M. Chwalla",
"T. Koerber",
"U. D. Rapol",
"M. Riebe",
"P. O. Schmidt",
"C. Becher",
"O. G\u00fchne",
"W. D\u00fcr",
"R. Blatt"
],
"categories": [
"quant-ph"
],
"doi": "10.1038/nature04279",
"journal_ref": "Nature 438, 643-646 (2005)",
"title": "Scalable multi-particle entanglement of trapped ions",
"url": "https://arxiv.org/abs/quant-ph/0603217"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "4ba00e11-1b52-481c-b273-088ea9f02862",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}