Simple optical measurement of the overlap and fidelity of quantum states

Autor:	Jaromír Fiurášek, Radim Filip, Martin Hendrych, Miloslav Dušek
Rok vydání:	2003
Předmět:	Physics Bell state Photon Antisymmetric relation Hilbert space General Physics and Astronomy Quantum Physics Polarization (waves) Linear subspace law.invention symbols.namesake law Quantum mechanics symbols High Energy Physics::Experiment Fidelity of quantum states Beam splitter
Zdroj:	Physics Letters A. 310:95-100
ISSN:	0375-9601
Popis:	We present the experimental results of measurements of the overlap of both pure and mixed polarization states of photons. The fidelity and purity of mixed states were also measured. The experimental apparatus exploits the fact that a beam splitter can distinguish the singlet Bell state from the other Bell states, i.e., it realizes projections into the symmetric and antisymmetric subspaces of photons' Hilbert space.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0dd1e25f3892f43ab3e9acb92ce8593a https://doi.org/10.1016/s0375-9601(03)00262-7 Zobrazit plný text záznamu Full Text from ScienceDirect