Topic
Atomic coherence
About: Atomic coherence is a research topic. Over the lifetime, 877 publications have been published within this topic receiving 29395 citations.
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TL;DR: In this article , the mechanism of probe intensity is studied in detail by using the dressed-state model, and it is shown that when the probe field is not so weak, the atomic Raman coherence can be manipulated by its intensity.
Abstract: In a Λ-type electromagnetically induced transparency system, it shows that on the Doppler-broadened linear absorption background, as the probe intensity increases, the single narrow line-width window gradually evolves into 3 windows and 2 absorption peaks alternately. In this paper, the mechanism of probe intensity is studied in detail by using the dressed-state model. We propose that when the probe field is not so weak, the atomic Raman coherence can be manipulated by its intensity. For a Doppler-broadened system, there will appear the discontinuous energy variation of the dressed-states, and the large Raman loss due to the double resonance for dressed-states, which are the key factors for the evolution of the transparency window.
01 Jul 2012
TL;DR: In this article, the concepts and physics behind lasing without inversion and atomic coherence effect were reviewed and a possible application of LWI was reported, focusing on the analysis of physical conditions under which a ∧-type three-level system exhibits LWI.
Abstract: We reviewed briefly about the concepts and physics behind lasing without inversion and atomic coherence effect. The discussion concentrates on the analysis of physical conditions under which a ∧-type three level system exhibits lasing without inversion. At the end of this review, a possible application of LWI was reported.
03 Dec 2007
TL;DR: In this paper, the authors combine two lasers and three atomic states in a lambda-system to explore atomic coherence via two-dimensional imaging of electromagnetically induced transparency.
Abstract: Imaging cold atom samples provides interesting opportunities for studying not only the external atomic distribution, but also the internal atomic state, particularly for atoms prepared in a coherent state. We have previously developed techniques for off-resonant imaging of a cold atom cloud, without optical elements, computationally extracting the atomic column density map from a diffraction pattern (diffraction contrast imaging or DCI). We are now combining two lasers and three atomic states in a lambda-system to explore atomic coherence via two-dimensional imaging of electromagnetically induced transparency.
TL;DR: Optical bistability and multistability are experimentally demonstrated in an optical ring cavity containing three-level (Λ-type) rubidium atoms in this paper, which is sensitive to the induced atomic coherence and can be controlled by coupling field and atomic density.
Abstract: Optical bistability and multistability are experimentally demonstrated in an optical ring cavity containing three-level (Λ-type) rubidium atoms. They are sensitive to the induced atomic coherence and can be controlled by coupling field and atomic density.
TL;DR: In this article, a scheme for three-level cascade atoms to entangle various optical and mechanical modes of two coupled cavity optomechanical systems is presented. And the authors show that the larger stationary macroscopic entanglement can be obtained and reaches the maximum at the same effective detuning.
Abstract: We present a scheme for three-level cascade atoms to entangle various optical and mechanical modes of two coupled cavity optomechanical system. With the existence of atomic mediums, our study shows that the larger stationary macroscopic entanglement of distant optomechanical systems can be obtained and reaches the maximum at the same effective detuning. Furthermore, we find that it is insensitive to the cavity decay rate for the entanglement between the two distant movable mirrors, and between the mirror and the adjacent or the distant cavity mode, which compensates for the effects of the cavity dissipation.