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Journal of Fujian Normal University

Quantum Properties of Fields in Squeezed Even and Squeezed Odd Coherent States

Hongcai Li

Published Jan 1, 2002• 0 citations
OpenAlex

Abstract

A discussion is made about the squeezing and coherence properties of fields in the squeezed even and the squeezed odd coherent states . Used the numerical method ,it has been studied that the relation between the quantum properties of the light fields and the squeezing parameter and the extracted value of the mean photon-number .

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Acta Physica Sinica•Jan 1, 2001•2 citations
We examine the nonclassical statistical properties of the squeezed even and the squeezed odd coherent states defined by the superposed states involving two squeezed coherent states with phase difference π between their displacement parameters. We demonstrate that the fields in the squeezed even coherent state can exhibit a remarkably enhanced squeezing level and mean photon number in comparison with the input squeezed coherent state. We also give examples of physical processes that lead to such a superposition.
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We mainly examine the nonclassical statistical properties of both squeezed even and Squeezed odd coherent states defined by the superposed states involving two squeezed coherent states with a phase difference n between their displacement parameters. We demonstrate that the fields in squeezed even coherent state can exhibit remarkably enhanced squeezing level and mean photon number in comparison with the input squeezed coherent state. We also point out the examples of the physical processes leading to such a superpotition.
In this paper, we use the numerical method to study the influences of and deformations on the quantum statistical properties of even and odd qs-coherent states. It is shown that nonclassical properties of the even and odd qs-coherent states are very different from those of the usual even and odd coherent states. It is found that squeezing and antibunching effect appear for both even and odd qs-coherent states in some range of the parameters , and . The smaller the and are, the larger the difference between the even and odd qs-coherent states and the usual even and odd coherent states is.