Quantum superposition state production by continuous observations and feedback.
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.
Negretti
Antonio
A
Lundbeck Foundation Theoretical Center for Quantum System Research, Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark. negretti@phys.au.dk
Poulsen
Uffe V
UV
Mølmer
Klaus
K