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Journal of Fujian Normal University

Amplitude-squared Squeezing for the Superposition State of the Vacuum State and the Coherent State

LI Hong-cai

Published Jan 1, 2004• 0 citations
OpenAlex

Abstract

Amplitude-squared squeezing for the superposition state of the vacuum state and the coherent state is studied.The effects of superposition parameter and coherent parameters on the amplitude-squared squeezing are discussed.

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Amplitude-squared squeezing is investigated for the two-photon Jaynes-Cummings model with the field initially in a squeezed vacuum or a more general squeezed state. For small values of the coherence parameter and large values of the squeeze parameter, the amplitude-squared variances show threefold oscillatory behavior on the long time scale. It is found that a ground-state atom (as against an excited one) leads to considerable enhancement of the input amplitude-squared squeezing. The behavior of photon number squared and its relationship to the amplitude-squared squeezing is commented upon.