D. Vitali et al., CONDITIONAL SCHRODINGER CATS GENERATION AND DETECTION BY QUANTUM-NONDEMOLITION MEASUREMENTS, Applied physics. B, Lasers and optics, 64(2), 1997, pp. 249-257
We show that a Schrodinger cat state can be generated using a crossed
Kerr interaction between two optical modes and an appropriate conditio
nal measurement on one of the modes. The effect of damping on the gene
ration process is analyzed in detail and two possible detection scheme
s for the cat state are presented.