Quantum absorptive `bistability’ wpadmin / December 21, 2010 Joseph Kerckhoff, Michael A. Armen, and Hideo Mabuchi, “Remnants of semiclassical bistability in the few-photon regime of cavity QED” Optics Express Vol. 19, Iss. 24, pp. 24468–24482 (2011). PDF 1012.4873 online