Field induced phase transition in the few photon regime A. D. Panferov, S. A. Smolyansky, A. I. Titov, B. Kämpfer, A. Otto, D. B. Blaschke and L. Juchnowski EPJ Web Conf., 138 (2017) 07004 Published online: 27 March 2017 DOI: 10.1051/epjconf/201713807004