{ "id": "0709.0804", "version": "v1", "published": "2007-09-06T09:13:26.000Z", "updated": "2007-09-06T09:13:26.000Z", "title": "Measurable entanglement for tripartite quantum pure states of qubits", "authors": [ "Chang-shui Yu", "He-shan Song" ], "comment": "4 pages, 1 figure. Phys. Rev. A 76, 022324 (2007)", "doi": "10.1103/PhysRevA.76.022324", "categories": [ "quant-ph" ], "abstract": "We show that for tripartite quantum pure states of qubits, all the kinds of entanglement in terms of SLOCC classification are experimentally measurable by simple projective measurements, provided that four copies of the composite quantum system are available. In particular, the entanglement of reduced density matrices, even though they are mixed states, can be exactly determined in experiment. Concurrence of assistance is also shown to be measurable by introducing an interesting equations with explicit physical meanings.", "revisions": [ { "version": "v1", "updated": "2007-09-06T09:13:26.000Z" } ], "analyses": { "subjects": [ "03.67.Mn", "42.50.-p" ], "keywords": [ "tripartite quantum pure states", "measurable entanglement", "composite quantum system", "simple projective measurements", "slocc classification" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Physical Review A", "year": 2007, "month": "Aug", "volume": 76, "number": 2, "pages": "022324" }, "note": { "typesetting": "TeX", "pages": 4, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2007PhRvA..76b2324Y" } } }