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Communications in Theoretical Physics

Measurement Induced Enhancement of Squeezing in Nondegenerate Two-Photon Jaynes–Cummings Model

Sai-Yun Ye

Published Dec 1, 2006• 2 citations
Publisher

Abstract

Squeezing properties in the nondegenerate two-photon Jaynes–Cummings model are investigated. The effects of direct selective atomic measurement and the application of the classical field followed by atomic measurement are analyzed. Different values of the parameters of the classical field are taken into account. It is found that the field squeezing can be enhanced by measurement.

DOI
10.1088/0253-6102/46/6/020

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Squeezing properties in the nondegenerate two-photon Jaynes–Cummings model are investigated. The effects of direct selective atomic measurement and the application of the classical field followed by atomic measurement are analyzed. Different values of the parameters of the classical field are taken into account. It is found that the field squeezing can be enhanced by measurement.
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A nondegenerate two-photon Jaynes-Cummings model is analyzed for its atomic-dipole squeezing and emission spectra. The input fields are assumed to be coherent or squeezed. The atomic dipole squeezes both for the on- and off-resonance excitations, showing a greater amount of squeezing for the former. The emission spectrum shows a central-two-peak structure for a variety of field inputs. When the fields are initially in coherent or squeezed states, sidebands appear whose widths are governed by the input-field statistics.