title: Tunable control of the frequency correlations of entangled photons.
abstract: We experimentally demonstrate a new technique to control the type of frequency correlations of entangled photon pairs generated by spontaneous parametric downconversion. Frequency-correlated and frequency-anticorrelated photons are produced when a broadband pulse is used as a pump. The method is based on the control of the group velocities of the interacting waves and can be applied in any nonlinear medium and frequency band of interest.
authors: ICFO-Institut de Ciencies Fotoniques, and Department of Signal Theory and Communications, Universitat Politecnicade Catalunya, Castelldefels, 08860 Barcelona, Spain. martin.hendrych@icfo.es
authors: M
authors: M
authors: Hendrych
authors: M
authors: M
authors: Micuda
authors: J P
authors: JP
authors: Torres