Generation of Squeezed States by Resonant Atom-Field Interaction
Educated preparation and post selection of Rydberg atoms passing through a high Q microwave cavity containing a field may be one of the simplest ways to prepare non classical states of the radiation field. Recently we have shown that we may generate a state, presenting two subpoissonian peaks in the photon number distribution 1, which is very close to the one photon displaced state 2,3. Those states have a hollow Wigner distribution and may be approximated by a superposition of squeezed states in many different ways. If we send a stream of atoms trough the cavity containing initially one of these hollow cats states and detect them suitably we may wash out one of its subpoissonian peaks. The state generated in this way is subpoissonian and squeezed in one of the quadratures of the field.