1201.6572 (R. Arun)

Interference-assisted squeezing in fluorescence radiation    [PDF]

R. Arun

We study the squeezing spectrum of the resonance fluorescence from a
coherently driven four-level atom in the Y-type configuration. The effects of
quantum interference induced by spontaneous emission on the squeezing
properties of the fluorescence radiation are investigated. It is found that the
quantum interference enhances considerably the steady-state squeezing in
spectral components for strong and off-resonant driving fields. The squeezing
may be increased in both the inner and outer sidebands of the spectrum
depending upon the choice of parameters. For some parameters, the interference
can also degrade the spectral squeezing by increasing the decay rates of atomic
transitions. We present a physical interpretation of our numerical results
using the dressed-state description of the atom-light interaction.

View original: http://arxiv.org/abs/1201.6572