Paired Photons with Controllable Waveforms

Vlatko Balić

Chen, Shengwang, Du

Stephen E. Harris, Vlatko Balić, Danielle Braje +2 more

The talk will describe experiments and theory showing the generation of counterpropagating paired photons with waveforms that are controllable by using EIT to vary the optical group velocity. Typical waveform durations are about 40 ns.

Vlatko Balić, Danielle Braje, Pavel Kolchin +2 more

We describe experiments and theory showing the generation of counterpropagating paired photons with coherence times of about 50 ns and waveforms that are controllable at a rudimentary level. Using cw lasers, electromagnetically induced transparency and cold 87Rb atoms we generate paired photons into opposing single-mode optical fibers at a rate of approximately 12 000 pairs per second.

Chinmay Belthangady, Shengwang Du, Stephen E. Harris +2 more

Alejandra Valencia, Alessandro Ceré, Xiaojuan Shi +2 more

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.