Physical Review A
Reconstruction of the state of the radiation field in a cavity through measurements of the outgoing field
Marcelo França Santos, L. G. Lutterbach, S. M. Dutra, Nicim Zagury, L. Davidovich
Abstract
We establish the relation between the Wigner function of a field emerging from a cavity, determined through pulsed homodyne tomography, and the phase-space distribution of the original field in the cavity. We show that the reconstructed Wigner function of the outgoing field is equivalent to generalized phase-space distributions of the initial cavity field, the original Wigner distribution being obtained when there is perfect mode matching between the outgoing field and the homodyning pulse.