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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9 citations
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TL;DR: In this paper, the quantum lens proposed by Averbukh et al. was extended to study the entanglement in the focusing process of an atomic beam, and the dynamics of this process was obtained in closed form.
9 citations
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TL;DR: In this article, the authors analyzed the dynamical behavior of all-optical switching and memory based on tunable optical bistability in a three-level Λ-type atomic system driven by a probe field circulating in an optical ring cavity, a coherent coupling field and an incoherent pump field outside cavity.
9 citations
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TL;DR: In this article, the connection and similarity between two different models for lasing without inversion are studied, and various dressed state pictures enlighten its physical origin, and the existence of atomic coherence in these experiments is critically examined.
Abstract: The connection and similarity between two different models for lasing without inversion are studied, and various dressed state pictures enlighten its physical origin. Recent experiments on coherence effects in sodium are reviewed. The existence of atomic coherence in these experiments is critically examined. It is found that the hyperfine structure and the coupling coefficients within the sodium D1 manifold are of crucial importance.
9 citations
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TL;DR: In this paper, a scheme of optical polarization modulation of a linearly polarized infrared probe field is studied in a degenerate four-level Yb atomic system, where the authors have observed an anomalous transmission spectra of two circular polarization components of the probe field exhibiting an enhanced two-photon absorption and a threephoton gain with comparable magnitude leading to the lossless transmission and enhanced circular dichroism.
Abstract: A scheme of optical polarization modulation of a linearly polarized infrared probe field is studied in a degenerate four-level Yb atomic system. We have observed an anomalous transmission spectra of two circular polarization components of the probe field exhibiting an enhanced two-photon absorption and a three-photon gain with comparable magnitude, leading to the lossless transmission and enhanced circular dichroism. We carried out a proof-of-principle experiment of fast optical polarization modulation in such a system by modulating the polarization state of the coupling field. The observed enhanced two-photon absorption and three-photon gain of the probe field are due to the result of competing atomic coherence effects.
9 citations