Room temperature Rydberg Single Photon Source
  We present an optimal protocol to implement a room temperature Rydberg single photon source within an experimental setup based on micro cells filled with thermal vapor. The optimization of a pulsed four wave mixing scheme allows to double the effective Rydberg blockade radius as compared to a simple Gaussian pulse scheme, releasing some of the constrains on the geometry of the micro cells. The performance of the optimized protocol is improved by about 70% with respect to the standard protocol. 
M. M. M\"uller, A. K\"olle, R. L\"ow, T. Pfau, T. Calarco, and S.   Montangero
quant-ph physics.atom-ph