Negretti Antonio, Poulsen Uffe V, Mølmer Klaus
Lundbeck Foundation Theoretical Center for Quantum System Research, Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark.
Phys Rev Lett. 2007 Nov 30;99(22):223601. doi: 10.1103/PhysRevLett.99.223601. Epub 2007 Nov 26.
We present a protocol for the generation of superpositions of states with distinguishable field amplitudes in an optical cavity by quantum nondemolition photon number measurements and coherent feeding of the cavity.