Generating Entangled Schrödinger Cat States within a Parametric Oscillator
David Vitali, M. Fortunat, P. Tombesi, F. De Martini · Fortschritte der Physik · 2000
We suggest a variant of the proposed experiment for the generation of a new kind of mesoscopic superposition quantum states, using two coupled parametric down-converter nonlinear crystals [F. De Martini, Phys. Rev. Lett. 81 (1998) 2842]. We study the parametric oscillator case and find that an entangled Schr�dinger-cat type state of two cavities, whose mirrors are placed along the output beams of the nonlinear crystals, can be realized under suitable conditions.