0134250 - FZU-D 20030145 RIV NL eng J - Journal Article
Hendrych, Martin - Dušek, M. - Filip, R. - Fiurášek, J.
Simple optical measurement of the overlap and fidelity of quantum states.
Physics Letters. A. Roč. 310, - (2003), s. 95-100. ISSN 0375-9601. E-ISSN 1873-2429
R&D Projects: GA MŠMT LN00A015
Institutional research plan: CEZ:AV0Z1010921
Keywords : fidelity * Bell measurement * parametric down-conversion
Subject RIV: BH - Optics, Masers, Lasers
Impact factor: 1.324, year: 2003

We present experimental results of a direct measurement of the overlap of both pure and mixed polarization states of photons. The fidelity and purity of mixed states were measured. The experimental apparatus exploits the fact that a beam splitter can distinguish the singlet Bell state from the other Bell states.
Permanent Link: http://hdl.handle.net/11104/0032164