dorsal/arxiv
View SchemaSingle observable concurrence measurement without simultaneous copies
| Authors | A. Salles, F. de Melo, J. C. Retamal, R. L. de Matos Filho, N. Zagury |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0611015 |
| URL | https://arxiv.org/abs/quant-ph/0611015 |
| DOI | 10.1103/PhysRevA.74.060303 |
| Journal | Phys. Rev. A 74, 060303R (2006) |
Abstract
We present a protocol that allows us to obtain the concurrence of any two qubit pure state by performing a minimal and optimal tomography of one of the subsystems through measuring a single observable of an ancillary four dimensional qudit. An implementation for a system of trapped ions is also proposed, which can be achieved with present day experimental techniques.
{
"annotation_id": "4d9d2b2b-774b-4bb9-a8f6-f8ac30765704",
"date_created": "2026-03-02T18:02:30.556000Z",
"date_modified": "2026-03-02T18:02:30.556000Z",
"file_hash": "accf7c8817382b5fe55b71b27270a8412acfceb76351b37c25a6f069d731bc59",
"private": false,
"record": {
"abstract": "We present a protocol that allows us to obtain the concurrence of any two\nqubit pure state by performing a minimal and optimal tomography of one of the\nsubsystems through measuring a single observable of an ancillary four\ndimensional qudit. An implementation for a system of trapped ions is also\nproposed, which can be achieved with present day experimental techniques.",
"arxiv_id": "quant-ph/0611015",
"authors": [
"A. Salles",
"F. de Melo",
"J. C. Retamal",
"R. L. de Matos Filho",
"N. Zagury"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.74.060303",
"journal_ref": "Phys. Rev. A 74, 060303R (2006)",
"title": "Single observable concurrence measurement without simultaneous copies",
"url": "https://arxiv.org/abs/quant-ph/0611015"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "f54abf56-e69c-4ad8-a4fb-55e295601b34",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}