We study the correlated spontaneous emission from a dense spherical cloud of N atoms uniformly excited by absorption of a single photon. We find that the decay of such a state depends on the relation between an effective Rabi frequency φ√N and the time of photon flight through the cloud R/c. If φR/c<1 the state exponentially decays with rate φ^2R/c and the state life time is greater then R/c. In the opposite limit φR/c1, the coupled atom-radiation system oscillates between the collective Dicke state (with no-photons) and the atomic ground state (with one photon) with frequency φ while decaying at a rate c/R.
APS Texas Sections Fall Meeting Abstracts
- Pub Date:
- October 2007