An efficient, tunable, and robust source of narrow-band photon pairs at the ${}^{87}$Rb D1 line

Roberto Mottola, Gianni Buser, Chris Müller +6

We present an efficient and robust source of photons at the ${}^{87}$Rb D1-line (795 nm) with a narrow bandwidth of $\delta =226(1)$ MHz. The source is based on non-degenerate, cavity-enha…