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We consider atomic system of $\Lambda-$type 3-level coupled to 2 mode fields,and derive an effective Maxwell-Bloch equation designed for two photon emissionbetween two lower levels. We find axially symmetric, topologically stablesoliton solutions made of condensed fields. Immediate implication of solitonformation to radiative neutrino pair emission is to enhance its rate, largerthan the usual $\propto N^2$ factor of target number dependence, along withanother merit of increasing the signal to the background photon emission.

Photonic soliton and its relevance to radiative neutrino pair emission