Abstract
Reducing the particle number fluctuations in a particular state is of high interest to many applications dealing with quantum phenomena. A collection of three-level Λ-type radiators in an incoherent electromagnetic field environment is investigated towards this aim. The second-order coherence functions are calculated to demonstrate sub-Poissonian or Poissonian particle number fluctuations in the two stable states. The quantum fluctuations of the stable-state populations can be transferred to those of the emitted electromagnetic field and vice versa. Thus, by detecting the quantum statistics of the generated field or by adopting the environmental reservoir one can estimate or control the corresponding fluctuations of the collective populations in the stable states, respectively.
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