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Chinese Physics Letters

Transmission Probability of an Ultracold Three-Level Atom Through a Micromaser Cavity

Zhi‐Ming Zhang, Shikang Zhou, Yuxing Xia, Yingli Chen, Sheng-Wu Xie

Published Aug 1, 1999• 6 citations
Publisher

Abstract

The transmission probability of an ultracold cascade three-level atom through a micromaser cavity is calculated and analyzed. It is shown that the micromaser cavity can be used as a velocity selector for ultracold three-level atoms, and the velocity selectivity is better for three-level atoms than for two-level atoms.
DOI
10.1088/0256-307x/16/8/009

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We study the spectrum of the micromaser injected with ultracold cascade three-level atoms. We examine the effects of the atomic centre-of-mass motion, the cavity length, the atom-field detuning, the ratio of the atomic injection rate to the cavity decay rate, and the number of photons in thermal equilibrium on the spectrum. We find that the micromaser injected with ultracold three-level atoms shows new spectral properties which are different from those of the micromaser injected with ultracold two-level atoms and the micromaser injected with thermal two- or three-level atoms. The main conclusions are that the linewidth can be broadened and the frequency can be either red-shifted or blue-shifted.
We derive the dressed states for the interaction of a cascade three-level atom with a quantum cavity field, suggest using ultra-cold cascade three-level atoms in micromasers, put forward the idea of the two-photon mazer, establish its general quantum theory and study its emission probability and photon statistics. We examine the effects of the atomic centre-of-mass momentum, the atom-field detuning, the photon number in thermal equilibrium, the ratio of the atomic injection rate to the cavity decay rate and the interaction length on the emission probability and the photon statistics.