GENERATION OF ENTANGLED FOCK STATES OF 2 NONLOCAL CAVITY MODES WITH DIFFERENT FREQUENCIES

We present a method to generate entangled Fock states of two nonlocal cavity modes with different frequencies. We send an atom with three le vels g, e, and f across two cavities. The atomic transition frequency between level g and e is resonant with the first cavity frequency, whi le the atomic transition frequency between level g and f is resonant w ith the second cavity frequency. The detection of the atomic state lea ves the pure field in an entangled Fock state.