Entanglement generation via phase-matched processes: different Bell states within the linewidth
Loading...
Date
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Description
It is shown, theoretically and experimentally, that at any type-II spontaneous parametric down-conversion (SPDC) phase matching, the decoherence-free singlet Bell state is always present within the natural bandwidth and can be filtered out by a proper spectral selection. Instead of the frequency selection, one can perform time selection of the two-photon time amplitude at the output of a dispersive fibre. Applications to quantum communication are outlined.
submitted for publication
submitted for publication