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Phys Rev Lett. 2006 Jan 13;96(1):010502. Epub 2006 Jan 3.

Field squeeze operators in optical cavities with atomic ensembles.

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Departamento de Física, Universidad de Santiago de Chile, Casilla 307, Correo 2, Santiago, Chile.


We propose a method of generating unitarily single and two-mode field squeezing in an optical cavity with an atomic cloud. Through a suitable laser system, we are able to engineer a squeeze field operator decoupled from the atomic degrees of freedom, yielding a large squeeze parameter that is scaled up by the number of atoms, and realizing degenerate and nondegenerate parametric amplification. By means of the input-output theory we show that ideal squeezed states and perfect squeezing could be approached at the output. The scheme is robust to decoherence processes.

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