CHINESE JOURNAL OF PHYSICS VOL. 40, NO. 3 JUNE 2002

Quantitative Analysis Using Squeezed States Defined in the Coherent-State Quantum Phase-Space Representation

A. Zúñiga-Segundo¹ and J. L. López-Bonilla²

Instituto Politécnico Nacional

¹Departamento de Física, Escuela Superior de Física y Matemáticas

Edificio 9, Unidad Profesional `Adolfo López Mateos', 07738 México, DF, México
²Sección de Estudios de Posgrado e Investigación,Escuela Superior de Ingeniería Mecánica y Eléctrica

Edificio Z-4, Unidad Profesional `Adolfo López Mateos', 07738 México, DF, México
(Received November 16, 2001)

The dynamics of the coherent and squeezed states is described and differentiated by means of the probability flux vector. The mean and variance values of the photon number operator used in quantum optics are calculated, by employing squeezed states defined in the coherent-state quantum phase-space representation.

PACS. 03.65.-w - Quantum mechanics.
PACS. 42.50.Dv - Nonclassical field states; squeezed, antibunched, and sub-Poissonian states;
operational definitions of the phase of the field; phase measurements

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