title: Shaping the waveform of entangled photons.
abstract: We demonstrate experimentally tunable control of the joint spectrum, i.e., waveform and degree of frequency correlations, of paired photons generated in spontaneous parametric down-conversion. This control is mediated by the spatial shape of the pump beam in type-I noncollinear configurations.
authors.affiliation: ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, Castelldefels, 08860 Barcelona, Spain. alejandra.valencia@icfo.es
authors.forename: Alejandra
authors.initials: A
authors.lastname: Valencia
authors.forename: Alessandro
authors.initials: A
authors.lastname: Ceré
authors.forename: Xiaojuan
authors.initials: X
authors.lastname: Shi
authors.forename: Gabriel
authors.initials: G
authors.lastname: Molina-Terriza
authors.forename: Juan P
authors.initials: JP
authors.lastname: Torres