Atom in a coherently controlled squeezed vacuum

Details Atom in a coherently controlled squeezed vacuum Atom in a coherently controlled squeezed vacuum

2006-10-18

arxiv.org/abs/quant-ph/0610150v1

Phys. Rev. A 76 013821 (2007)

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevA.76.013821

A broadband squeezed vacuum photon field is characterized by a complex squeezing function. We show that by controlling the wavelength dependence of its phase it is possible to change the dynamics of the atomic polarization interacting with the squeezed vacuum. Such a phase modulation effectively produces a finite range temporal interaction kernel between the two quadratures of the atomic polarization yielding the change in the decay rates as well as the appearance of additional oscillation frequencies. We show that decay rates slower than the spontaneous decay rate can be achieved even for a squeezed bath in the classic regime. For linear and quadratic phase modulations the power spectrum of the scattered light exhibits narrowing of the central peak due to the modified decay rates. For strong phase modulations side lobes appear symmetrically around the central peak reflecting additional oscillation frequencies.

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