Narrow Band Source of Transform-Limited Photon Pairs via Four-Wave Mixing in a Cold Atomic Ensemble

Bharath Srivathsan, Gurpreet Kaur Gulati, Chng Mei Yuen Brenda +3

We observe narrowband pairs of time-correlated photons of wavelengths 776\,nm and 795\,nm from non-degenerate four-wave mixing in a laser-cooled atomic ensemble of ${}^{87}${Rb} usin…