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Acta Sinica Quantum Optica

Linear Entropies of a Cascade Three-level Atom Interacting with One-mode Photon Field

Gao‐xiang Li

Published Jan 1, 2005• 0 citations
OpenAlex

Abstract

In this paper we study the dynamics of a three-level atom interacting with one-mode photon field, The time evolution of atomic linear entropies of field-atom coupling system is investigated. The effects of field's initial state and detuning on atomic linear entropies are discussed.

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The entropy evolution properties of field (atom) in a moving cascade three-level atom interacting with a single-mode field are studied through two photon transitions. When the atom is initially in coherent state, the influences of the atomic motion, the field-mode structure parameter and the initial average photon number on the evolution of the entropy are discussed. The results show that the entropy evolution period of the field is dependent of the atomic motion and the field-mode structure parameter. However, the parameter of the initial average photon number will neither lengthen nor shorten the entropy evolution period of the field, but the numerical values of maximum and sub-minimum of entropy will be affected by it.