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 paper, a system consisting of three-level A-type rubidium atoms in an optical ring cavity was experimentally manipulated by changing the controlling and cavity field parameters (power and frequency).
Abstract: Optical bistability and dynamic instability are experimentally observed and studied in a system consisting of three-level A-type rubidium atoms in an optical ring cavity. The bistable behavior and self-pulsing frequency are experimentally manipulated by changing the controlling and cavity field parameters (power and frequency). These nonlinear effects are influenced by the enhanced Kerr nonlinearity due to atomic coherence in such a system.
94 citations
TL;DR: In this article, the authors analyzed the hybrid absorptive-dispersive optical bistability behavior in an open Λ-type three-level atomic system by using a microwave field to drive the hyperfine transition between two lower states, along with the consideration of incoherent pumping and spontaneously generated coherence.
Abstract: We analyze the hybrid absorptive-dispersive optical bistability (OB) behavior in an open Λ-type three-level atomic system by using a microwave field to drive the hyperfine transition between two lower states, along with the consideration of incoherent pumping and spontaneously generated coherence. Different from the closed system, we show that the bistable threshold intensity and related hysteresis loop can be controlled by adjusting the ratio between atomic injection and exit rates. More interestingly, the appearance and disappearance of OB can be transformed mutually by varying the relative phase of three coherent fields under the condition of a strong spontaneously generated coherence. The manipulation of OB behavior through the intensity of the microwave field and the atomic cooperation parameter is also analyzed.
90 citations
TL;DR: The transient behavior of an electromagnetically induced transparency in three-level atomic systems is described and Transient gain without population inversion and enhancement of dispersion are discussed.
Abstract: We describe the transient behavior of an electromagnetically induced transparency in three-level atomic systems. When the coupling f ield is switched on, the absorption for the probe field is oscillatorily damped to its new steady-state (transparent) value. Transient gain without population inversion and enhancement of dispersion are discussed. A realistic system for experimental testing of these effects is presented.
90 citations
TL;DR: In this article, a scheme for three-level cascade atoms to entangle two optomechanical oscillators as well as two-mode fields was proposed, and it was shown that two movable mirrors and twomode fields can be entangled even for bad cavity limits.
Abstract: We propose a scheme for three-level cascade atoms to entangle two optomechanical oscillators as well as two-mode fields. We show that two movable mirrors and two-mode fields can be entangled even for bad cavity limits. We also study entanglement of the output of two-mode fields in the frequency domain. The results show that the frequency of the mirror oscillation and the injected atomic coherence affect the output entanglement of the two-mode fields.
90 citations
TL;DR: In this paper, the authors considered a simple model of a four level atom as a candidate for laser action without population inversion and calculated the absorption profile of the laser transition and identified the conditions under which gain may develop.
87 citations