A quantum optical valve in a nonlinear-linear resonators junction Eduardo Mascarenhas, Dario Gerace, Daniel Valente, Simone Montangero, Alexia Auffèves and M. França Santos EPL, 106 5 (2014) 54003 Published online: 02 June 2014 DOI: 10.1209/0295-5075/106/54003